While in Zawame's Free Performance Zone, Mai and Mitsuzane of the dance team Team Gaim are having a free-spirited dance when members of rival Team Baron scare them away when an Inves Game gets out of hand. When Mai goes to former teammate Kouta Kazuraba to reveal something strange has happened, he reveals that Team Gaim's leader Yuya gave him a strange Lockseed, and Mai reveals Yuuya informed her of it as well. The two eventually find a way into the Helheim Forest that has appeared in the Free Performance Zone.

Kouta tries to use his new abilities as Kamen Rider Gaim to help out at his part-time job, but he only gets in the way. And when Yuuya mysteriously disappears, Kouta wonders if what happened in the forest was real, and now that he is in charge of Team Gaim, he must lead the group in a dance-off against Team Baron.

Kouta starts to gain a reputation in Inves Games by fighting them as Kamen Rider Gaim, when Kaito Kumon reveals he too has a Sengoku Driver and the Banana Lockseed.

Kouta and Kaito work together to try to find Yuya, but they instead face off against an even more terrible enemy.

Kouta tries to overcome the events that befell him in the Helheim Forest against Zangetsu while Kaito challenges Mitsuzane to a fight, with the new Armored Rider Ryugen unable to fight Baron on his own.

Hase and Jonouchi transform into Armored Riders Kurokage and Gridon, but something strange happens during their fight with Baron against Gaim and Ryugen. Later, Kouta tries to get a part-time job at a pastry shop, only to be disturbed by the effeminate head chef.

After easily defeating both Kurokage and Gridon, Kamen Rider Bravo steals their Lockseeds and sets his sights on defeating all of the Armored Riders. Kouta is angered that Oren has made it his mission to defeat all of the Armored Riders, but Kaito just tells him to beat him to get it over with. Before long, Bravo issues a challenge to Baron, but it is not Baron who he is really after.

After his defeat at the hands of Bravo, Kaito believes he is no longer strong enough and seeks out a new strength. While Kouta seeks out a new job, Mai finds herself trapped in the Helheim Forest again, forcing Kouta and Mitch to go and rescue her.

Kouta and Mitsuzane must hunt down a fully manifested Inves that is randomly attacking people in the city while also dealing with keeping up their Beat Rider ranking.

Kouta and Mitsuzane begin to postulate on the identity of the white Armored Rider who seems to be destroying all evidence of the Inves entering their dimension. To try to figure out what should be done about both the Inves and the white Rider, Kouta decides to consult with the other Armored Riders

As the Lockseed gathering "game" begins, Baron and Bravo fight between themselves, while the white Armored Rider, Kamen Rider Zangetsu, investigates the infiltration into Helheim Forest. Meanwhile, Kouta, who has also entered the forest, decides to track down the white Rider and finds the base of operations that may be the cause for the tears into Helheim Forest opening on their own.

Kouta and Mitsuzane attempt to warn the Beat Riders about Yggdrasill's manipulation, only to find that Yggdrasill is deploying Kurokage Troopers to silence anyone who knows the truth as Zangetsu uses a new belt model. Meanwhile, Mai encounters the mysterious girl who resembles her.

A mysterious bacteria is infecting people in Zawame City. In the crisis situation, Kouta, Mai, and Mitsuzane try to find out the cause behind this.

After Hase transforms into an Inves, Gaim tries to take him out before he can do much damage but finds it difficult to harm someone who he believes is still human inside. Meanwhile, Baron does his best to combat Zangetsu Shin but is overcome by Kurokage Troopers and captured. And Mitsuzane, who realizes his brother is their foe the white Armored Rider, infiltrates the Yggdrasill Corporation headquarters on his own to see what is truly going on.

With Kouta and Kaito both captured by the Yggdrasill Corporation, they are brought to Ryoma Sengoku who reveals that he created the Sengoku Drivers and Genesis Drivers, and reveals the truth about the Helheim Forest to them. Elsewhere, Mai and Zack try to convince the other teams to hold off the Inves Games due to the damage they cause and how they are missing most of the Team Leaders. While under Yggdrasill's custody, Kouta is approached by DJ Sagara who tells him more of the truth behind the Yggdrasill Corporation, and suggests that he do something about it.

After escaping the clutches of the Yggdrasill Corporation, Kouta wonders why all three of them were able to escape so easily, knowing how Ryoma Sengoku was interested in them. Later, Mai and Chucky continue to try to convince other teams to end the Inves Game, but they instead witness an Elementary Inves robbing a jewelry store. Meanwhile, Takatora has shown Mitsuzane a horrible scene hidden within the Helheim Forest and revealed that he easily beat Kouta.

After Takatora reveals the truth about Helheim Forest to Mitsuzane, he tasks his brother with recovering Kouta's Sengoku Driver. Elsewhere, Oren and Jonouchi plan to perform the same act with their own plan in mind. Kouta later receives a phone call that tells him his sister has been kidnapped.

Mai tries to host a dance contest to bring everyone's morale up, but none of the teams will participate. Mai tries to get Kouta to convince Team Baron to join, but he is not sure that he will dance either. It is only the appearance of Oren who changes the minds of the others, as he turns their friendly dance competition into an outright fight.

Duke fights against Gaim and Baron and manages to come out on top. As they lick their wounds, DJ Sagara appears and gives Kouta a present in the form of a Tulip Hopper Lockseed. When they arrive in the Helheim Forest, they are quickly surrounded by Yggdrasill, pressuring the two Beat Riders to fight to stay alive.

Takatora shows Kouta the truth behind Helheim Forest, at the same time Kaito would learn the same thing from Ryoma, Sid, and Yoko. Meanwhile in Zawame City, more Inves invade and it's up to Mitsuzane and Zack to stop them.

The Helheim Forest will soon destroy the Earth if no one acts on it. Kouta informs Mitsuzane about this fact and says they must do something, but Mitsuzane is hesitant as he already knows the truth. Meanwhile, Kaito examines a photograph taken from within the Helheim Forest and believes he sees a human figure, then goes into the forest to investigate.

The Crack at Yggdrasill's lab causes more and more Cracks to appear throughout Zawame. Kouta believes the solution is to close Yggdrasill's Crack before any more Inves can attack. However, Kouta encounters Ryoma and Yoko waiting for him in Helheim Forest, ready to stop him so their plans may continue.

Now aware that he killed Yuya, Kouta loses all will to fight, and will not even seek to destroy the Scalar System. As he struggles with the thought of telling the truth to his friends, Kaito encounters the strange Inves in Helheim Forest, once more.

Baron continues to attempt to defeat the Over Lord Inves to no success, until Marika suggests a new plan. Mitsuzane tries to get Kouta, now that he has the Peach Energy Lockseed, to track down the Over Lord Inves, while also finding out that DJ Sagara has been helping him all this time, leading him to wonder who Sagara really is and what his plans are.

After watching Kouta, Mitsuzane, and Zack battle Inves, Jonouchi realizes that the dance team days are over, again. Later, Oren arrives to begin Jonouchi's next set of training. Kaito tries to tell Kouta about the Over Lords, while DJ Sagara is confronted by Ryoma, Yoko, and Sid. After Gaim, Bravo and Gridon fought the Inves that appeared Oren and Jonouichi goes home but Jonouichi reveals to Oren that the Inves Game is no more. Later, Oren finds a crack and tries to investigate it but discovers something yet to be revealed.

Mai wants to know why Kouta has been hiding from her, and he reveals the truth to her about Helheim Forest, as well as the Inves and the fate of Yuya, upsetting Mitsuzane, who is still under orders from his brother. Meanwhile, Kaito plans to finish his fight with Demushu.

Kouta is knocked unconscious by Ryugen's backhanded attack, and Baron fights Ryugen for acting so cowardly. Meanwhile, Takatora mulls over the idea of having to cull the Earth's population down to only one billion people through the use of the Sengoku Drivers, remembering back to the days of first developing them, unaware that even then Ryoma was conspiring against him. When Kouta regains consciousness, he explores Helheim Forest once more, only to be approached by someone unexpected.

Takatora reports to Ryoma, Sid, and Yoko that Kouta will be working for them in hunting down the Over Lords in an attempt to stop Helheim Forest. They agree to the plan, but the next time they all enter Helheim Forest, Ryoma has set up a trap to take Takatora out of the equation.

In the forest, Takatora is saved by the Over Lords and introduced to their leader Rosyuo who tells him of their past as the Femshinmu people and the secrets of Helheim. Later, Kouta, Kaito, and Mitsuzane all search the forest for Sid, but Sid has set a trap for Kouta. Then Kouta fights with Zangetsu Shin in Helheim Forest, unaware that it is actually Mitsuzane attacking him using his brother's weapons.

Kouta and Mai meet a young man who can remember nothing about himself other than his name, Jiro. During a rain storm, Kota tries to pull Jiro out of the rain, but noticed his hand feels like metal instead of skin, bringing up the question if Jiro is a robot. Elsewhere, Ryoma looks over the schematics for an android developed by a colleague. Its model name is Hakaider.

The "Fruit of Knowledge" gives someone the power to remake the world itself and become God. Sid overhears from one of the Over Lords, Redyue, that Rosyuo has been safeguarding the fruit. Sid plans to steal it so he can become God. While this unfolds, the Over Lord Demushu has left Helheim to invade Zawame City and begins to randomly destroy the city.

Baron Lemon Energy Arms and Knuckle cannot hold off Demushu forever, and he escapes them. With Sid murdered at the hands of Rosyuo, he instructs Redyue to continue the invasion of Zawame much to Takatora's shock and terror, while Mitsuzane seeks out the Fruit of Wisdom still. Elsewhere, Kouta wakes up, and DJ Sagara presents him with something that will help him out.

The Inves are invading, Kouta's sister takes shelter, and Kouta patrols with the others. Trying to get the Golden Fruit, Ryoma reveals Project Ark to the world, which erupts into chaos. Then, without help from the Japanese government or Yggdrasill, Kouta and the other Riders lend a hand to the people left behind.

With the world falling into chaos thanks to Ryoma, Zawame City has become an isolated place infested with Inves. Kouta's sister Akira, along with others in shelters, go outside to call for help. Meanwhile, Redyue broadcasts an announcement over the radio to the whole world stating that Helheim will completely take over the Earth in a year. At the same time, Inves are commanded to hunt the citizens of Zawame City.

Yoko confronts Mitsuzane about his actions as Zangetsu Shin and whether or not he will tell Kouta, while Redyue plans on using human technology to further her own goals as well as bring back Rosyuo's queen. But to do that, Redyue requires a sacrifice.

Rosyuo begins the invasion of the Earth by opening Cracks around the world. Kouta, Kaito, and Yoko plan an assault on the Yggdrasill tower to stop him, while Kouta also seeks out Akira. However, Mitsuzane has other plans after seeing Mai, again.

As Mitsuzane/Zangetsu Shin is about to kill Kouta, Takatora appears and stops him, revealing the two's relationship as brothers to Kouta. Later, the fight of the two brothers begins as Takatora returns as Zangetsu to fight Mitsuzane.

Kaito meets DJ Sagara, who provokes him and summons a ghost-like Gaim Kiwami Arms. After the battle, he gets caught up in an alternate world where he leads Team Baron in the competition for soccer's All Rider Cup.

Mitsuzane seems to be hallucinating, claiming he can see Takatora even though he knows he defeated him. Elsewhere, Ryoma returns to Zawame City, and Kouta believes he may now be an ally against Mitsuzane and the Over Lords.

Kouta and Ryoma work together to break into Yggdrasill Tower to free Mai and Akira.

Kouta follows the passage to Yggdrasill Tower and to his surprise discovers an underground dungeon. Redyue informs Kouta that he has become one of the Over Lords, rather than a human, and proceeds to show him his apparent destiny.

Kaito fights with Mitsuzane but the two are disrupted by Ryoma. Meanwhile, Mai talks to Rosyuo and is entrusted with the Forbidden Fruit before entering a fight against Kouta and Kaito.

Kouta tries to prove that he has not changed, despite all Kaito has seen in Helheim, and helps the others clear Zawame of Inves. However, Mitsuzane and Ryoma discover that Mai, who has been taken ill, is now the host of the Golden Fruit, and wonders why Rosyuo has placed it in her.

As Gaim and Ryugen Yomi continue their battle, Kaito realizes that there is only one way for him to surpass Kouta now that he possesses the powers of the Over Lord King.

As Mai accepts the powers of the Golden Fruit and attempts to change the fate that has befallen her friends, Kaito seeks her out to gain its power, as well.

Zack sets a trap for Kaito, but...

Meanwhile, Kouta has gained command over an Inves army whilst battling Kaito.

Betting their lives and beliefs, Kazuraba and Kaito finally face off.

Seven months after Kouta and Mai have left and colonized a new planet, all traces of Helheim Forest have been cleared from Zawame City, but a returning threat appears to change things forever. Mitsuzane realizes that Kouta isn't on Earth anymore and that it's up to them to save Zawame City.

Takeru Tenkuji strives to be a Ghost Hunter just like his late father, Ryu Tenkuji. On his 18th birthday, he receives a Ghost Eyecon as a present from his late father's spirit. However, a mysterious monster appears, demanding that Takeru hand the Eyecon over. Takeru boldly confronts the monster, but...

Takeru has been revived from the dead and has obtained the power to transform into Kamen Rider Ghost. However, he now has only 99 days to obtain the Eyecons of 15 heroes. Akari, who can't cope with the lack of any logical and scientific sense this situation makes, is called by her professor to where another strange event has occurred. Meanwhile, Onari, knowing that the Gamma are targeting the hero Eyecons, instructs Takeru to go wherever strange events happen and sends him to the same place. Takeru finds out from the Hermit that the next hero to appear is Thomas Edison. However, he has no clue how to summon him. Meanwhile, the mysterious man in black is meeting with an inventor. What is his objective now?!

Sennin gives Takeru three hints: "England, woods, and gentleman thief". After hearing this, Takeru realizes that the next Eyecon is Robin Hood's. As if it were fate, a modern day thief has been going around the city robbing the rich and giving money to the poor while calling himself Little John. Takeru decides to track down this Little John but...

Takeru, who has obtained his third Eyecon, is told by Sennin that the fourth one, Oda Nobunaga, is not going to be easy to obtain. A new client, Kuroda, has come to the Mysterious Phenomenon Institute requesting their assistance as their president of the Sengoku Corporation has suddenly become cold and tyrannical and things have been seen floating around at the company’s headquarters. Could this be the work of a Gamma? Takeru starts investigating. Clues include the letter from a famous Japanese general and the suspicious behaviour of Sakuma, one of Kuroda’s secretary.

The apparent sounds of a machine gun in a supposedly abandoned school, about to be remodeled, catch the attention of Takeru and he decides to investigate. Takeru rushes to the elementary school to find the Gamma. As Takeru fights against the Gamma, the Rider that stole the Nobunaga Eyecon appears again and attacks Ghost. As this Kamen Rider attacks Takeru, he allows the Gamma to get away!

The fear and insecurity of his last two defeats against Specter have made Takeru unable to become visible. An uneasy Akari begins to fear that Takeru will no longer be visible to her, even with the Shiranui powder. A new client seeks the help of the Mysterious Phenomena Researchers. Sound has disappeared around Kosuke Kimijima, a young prodigy composer. It is like Beethoven... Takeru, Akari and Onari pay a visit. While unable to hear, Kimijima starts composing non-stop and Takeru is unable to warn him that he is in danger. A new Gamma appears and Takeru transforms into Ghost. However, Specter appears again to get in his way.

The next hero seems to be Billy the Kid. Takeru immediately gets Sennin's clue and at the same time, a new client comes to the Laboratory saying that something is wrong with their best friend. At the same time, Narita and Shibuya bring information of a sighting of the Mysterious Man. Akari and Onari follow the clue to the Mysterious Man and see him talking to Specter. The man, whose name is Saionji, talks about "what happened 10 years ago..."

All the inhabitants of the apartment building the friend lives in seem to be acting strangely as well. Takeru investigates and a Gamma appears. Takeru transforms into Ghost and fights but Specter appears. Takeru, who now has lost all fear, confronts Specter as well.

Ghost was able to defeat the giant Gamma with the Iguana Ghostriker and rescue Akari and Onari from the Gamma Commandos. Specter confronts Saionji, the mysterious man, who talks to him about what happened 10 years ago. The people from the apartment complex were being drawn to a monolith very similar to the one at Tenku Temple. It seems that the Gamma, Specter, Alain and Saionji all have their respective agendas.

Specter turns out to be Makoto, Takeru's childhood friend that had gone missing 10 years ago. What "hell" is Makoto talking about? What was his father researching? Takeru cannot hide his uneasiness as Sennin, as usual, doesn’t provide any answers.

Reports surface about strange events ocurring in the laboratory of Professor Igarashi, an authority in physics who also went missing 10 years ago. Igarashi was an acquaintance of Ryu, Takeru's father. There may be some information about Makoto... Among the things, he finds a photograph of them with Saionji.

A new character appears before Alain and Saionji takes the next step in his plan.

Takeru has decided to gather the 15 Eyecons not to recover his life but to revive Kanon, Makoto's sister. Akari and Onari are in total disagreement. Takeru loses his words at the feelings of his friends. Makoto appears before Takeru and Akari and transforms into Specter, intent on stealing Takeru's Eyecons. However, Takeru tells him of his intentions to revive Kanon. Makoto lowers his weapon, taken aback by the similarity between Takeru's plead and that of his father, Ryu.

Now that the Benkei Eyecon has appeared, Saionji prepares to steal the Eyecons from both Makoto and Takeru. At the same time, the newly arrived Jabel seems to have an additional agenda which Alain seems not to know.

With all 15 Eyecons gathered, Saionji barges his way into Daitenku Temple to the Monolith to demand the ability to take over the world. However, Takeru is taken into a giant mandala called the Great Eye that has appeared in the sky and is asked one question by a disembodied voice: "What is your wish?"

Takeru's wish to bring Makoto's sister Kanon back starts their search for the Eyecons all over again, but without the Gamma to point the way where they have scattered, Akari and Onari are worried that they are too late to bring Takeru back to life. The return of the Gamma Superior means they are on the right track, but something happens to Takeru after he transforms into Kamen Rider Ghost, again.

Thanks to his father's soul, Takeru is still free to collect the 15 Ghost Eyecons once more, and by doing so, he can also bring his father back. But first, he encounters the soul of Sakamoto Ryōma, who poses a challenge for Takeru before he willingly joins him, which he describes as a "Satchō Alliance". Along the way, Takeru must deal with a new Gamma, as well as the return of the Katana Gamma.

Nagamasa, an artificial satellite developer, wanted to follow in the footsteps of his father Satsunoshin and his brother Yoshiyuki, both pioneers of the trade. He dreamt about working together with them to create an artificial satellite. Unfortunately, when they were about to build one, Yoshiyuki passed away in a freak accident causing Satsunoshin to retire out of grief. In order to fulfill Nagamasa’s dream, Takeru tries to convince Satsunoshin to continue building the satellite. However, after the Planet Gamma's attack, Takeru tries to make it his priority, but Onari persuades him to focus on helping Nagamasa resolve things with his father Sachinoshin first. The split between father and son has something to do with the past, and Takeru must figure out what that event was to resolve their differences before the Planet Gamma attacks, again. ​

The Fukami siblings, Makoto and Kanon, are approached by Alain and Jabel. Makoto attempts to fight Jabel but is overwhelmed, which results in Kanon being kidnapped. Knowing that he can't beat Jabel as he is, Makoto tries to use the Eyecon of the "Escape King", Houdini, even though it never let him use its power before.

Takeru decides that he must follow in his father's footsteps and figure out a way to stop the Gamma by preventing them from ever entering the human world. However, the sudden appearance of several Gamma Commandos leads them to put these plans on hold, particularly when Takeru and Makoto discover that they are being led by a new enemy.

Alain, now able to transform into Kamen Rider Necrom, makes easy work of fighting Ghost and Specter. However, for Takeru, it was Alain's words, not the defeat, that bothered him the most.

Strange incidents of young women being attacked within a thick mist have started to happen. A woman able to make predictions about the next attacks, Miwako, appears. Onari firmly believes her while Akari denies everything. All the same, they go to the predicted area. The prediction is fulfilled and a Gamma attacking women appears. Takeru is busy looking for the Newton Eyecon so Onari decides to confront the Gamma with his staff...

When the spirit of Himiko isn't the cause of the strange happenings in the city, the Himiko Eyecon leads Takeru to the Gamma World for a revelation. With Makoto also out of action during the continued attacks on young women, Akari and Onari step forward to try to discover the reason for the attacks, but Akari must first improve the Shiranui formulation.

Alain has turned Makoto into Necrom Specter and now has full control of him, calling him the "perfect friend". Takeru immediately denies this and promises to get Makoto back.

Igor, using a Gamma's special powers, has infiltrated a company building. Meanwhile, numerous objects have become drawings in the city. It seems that a new Gamma has appeared. Takeru locates it, transforms into Ghost, and attacks but the Gamma does something nobody could expect...

Kanon, wanting to save her brother, searches for Alain by herself.

Takeru tries to teach the Gazai Gamma the meaning of friendship, but must also deal with both Igor and Necrom Specter seeking to destroy the "incomplete" Gamma.

Takeru discovers that Makoto's real body still exists in the Gamma's world, and once that disappears, Makoto will as well. To save Makoto, Takeru enlists the help of Akari who tries to use the Gazai Gamma to figure out a way to save Makoto, but Makoto has already gone off on his own to settle matters his own way. ​

Igor, while tending to his progressing plan, orders the Katchu Gamma to destroy the traitor Gazai Gamma. Meanwhile, having sent Takeru to the Gamma world, Akari and Onari decide to not waste time and resume investigating Deep Connect. However, the Katchu Gamma appears. Takeru, without the support of the heroic Eyecons, starts looking for Makoto. Can Makoto settle things and return? Adel's scheme is about to take action and will change the world completely.

Takeru is horrified at the things he witnessed in the Gamma World, but now with all 15 Eyecons gathered once more with Alain now an ally, he wonders what to do for the future. Their plans are waylaid when Adel sends Jabel to the human world once more to kill Alain.

Akari and the others cannot believe that Makoto, who saved Alain from harm, was only an Eyecon. Takeru, now knowing that Makoto’s body is in the Gamma world, intends to go but the others stop him. Kanon offers Alain’s help but Takeru does not trust him. After witnessing this, Kanon goes by herself to convince Alain. Sightings of a Mouse Monster have been reported. It seems to be different than a Gamma. On top of that, Goemon’s ghost has possessed Onari. Alain is still the target of assassins and he still cannot get used to a flesh body and the fear of death. The appearance of a red warrior will further complicate things.

Takeru is now more resolute in bringing Makoto's body back from the Gamma world and Alain seems to have agreed to help. However, Akari is the one to stop them, stating that "It is not time yet." Akari senses that something is going through Alain's mind and is determined to find out more. Igor issues new orders to Bills and the Hikoki Gamma. Alain, irritated at the way Akari is seeing through him, goes to Fumi's takoyaki stall and Kanon is there. Suddenly, she falls unconscious. When Alain looks up, the sky is red.

In spite of Takeru defeating the Hikoki Gamma, the red sky continues expanding. Weakened after his battle with Jabel, Alain is suffering the same effects as Kanon from the red sky. Thanks to Akari, things are not going as he intends them to. Alain finds Akari concentrated on her work and approaches silently...

While Kanon's condition worsens, Takeru, along with Narita, Shibuya and Onari, go around the city looking for the origin of the red sky. Without any concrete pattern or direction, the group is left in confusion.

Takeru and Alain have returned to the Gamma World. The former returns to save Makoto while the latter is set on finding answers. Takeru, under the impression that they both had the same objective in mind, loses sight of Alain. What are his true intentions? Meanwhile, Akari, Onari, and Kanon can’t do anything but wait. Akari continues trying to break the code of the Monolith while Onari teaches Cubi more about humans. Igor, on his side, continues with his plan. Adel has witnessed the birth of a new threat from the Praying Room...

After witnessing the murder of his father Adonis by his older brother Adel, Alain is unable to move and cannot overcome the situation and feelings it caused. Makoto has obtained a mysterious new Eyecon and goes in search of Takeru, who did not return after his encounter with the Gammaizers.

In the human world, Cubi is in a slump. While trying to clear his head, he is confronted by the Onpu Gamma. Akari, Onari, and even Igor are added into the mix. Will Onari and Akari be able to overcome this pinch?

Yuki visits the Paranormal Events Laboratory claiming that she saw her supposedly dead father entering the Deep Connect HQ building. The Houdini Eyecon, for some reason, decides to possess her. Takeru heads to Deep Connect to find out the truth.

Having lost his father, Alain is at loss of purpose in his life. Fumi approaches him and acts kindly by giving him new clothes. Makoto appears before him, asking for his help in investigating Yuki’s incident but...

Alain had brought a drawing set for Fumi but her Takoyaki stand is full of people looking worried while an ambulance is seen rushing away. Alain cannot believe what he hears once he asks what happened, his hope fading away yet again...

Yuki has infiltrated Deep Connect and it is none other than CEO Steve Bills who finds her, but offers her his help. Takeru and the others come aftewards and, while not fully trusting Bills, they follow him. Yuki finally reaches where her father is but a terrible truth awaits.

Alain has taken a big step by deciding to live as a human with Fumi's memory in his heart. He asks Takeru and Makoto for help. After many difficulties, their objective has unified and they can now fully join forces. Alain proposes destroying the gates that connect this world to the Gamma world. Still at doubt about the recent insight into people's memories he's been having, Takeru agrees to assist Alain.

In the Gamma world, Edith questions Adel: "What do you wish for?" Adel laughs this question off and uses his newfound power. As a consequence, many adults have become children around the city, Shibuya’s mother being one of them. The Daitenku Temple is filled with children and a familiar face makes an appearance.

Igarashi has called Takeru into the memories of past times. He finds out a truth that has been hidden for 10 years. The wishes and feelings of his father, Igarashi, Saionji and the Hermit resonate inside him. What could be beyond these strange changes Takeru is experiencing?!

Meanwhile, Shibuya is looking for his mother, who has escaped yet again. More and more adults are being turned into children. Society itself may spiral out of control. Everyone is running against the clock to solve the mysterious phenomenon the new Gammaizer has set in motion.

Gammaizer Gravity begins to attack alongside Gammaizer Fire, causing significant damage. Alain attempts to defeat Gammazier Fire with a kamikaze-like ability of the Necrom system to protect Takeru, but is knocked out of his transformation at the last moment. The unexpected happens when Gammaizer Gravity both defeats Ghost, and destroys his Ore Eyecon, causing him to vanish.

Takeru's absence saddens his friends and allies and while they discuss how to revive him, the Gammaizers reappear. Akari opens a portal to send them to another world, but the plan fails when they managed to escape and soundly defeat the other riders.

Akari and the others vow to not give up, and their resolve and emotions not only revive Takeru, but grant him the Mugen Eyecon. Takeru returns with new strength and destroys Gammaizers Gravity and Fire. Is this new power only a temporary halt to Takeru's death, and can it permanently destroy the Gammaizers?

Thanks to Takeru's friends being able to revive him through the destroyed Ore Ghost Eyecon, he was able to defeat the immortal existence of the Gammaizer thanks to a new form made of light! Yurusen, who helped to revive Takeru, still remains as a ghost. And Sennin is beginning to talk about Takeru's own existence. The fact does not escape Sennin, as he himself doesn't know what state he is in now. Although there are less days now until his death, he seems to have revived completely. Meanwhile, Akari's teacher won't wake up from the Dream World, as they discover that Igor is eventually behind all this. Adel sends in a new Gammaizer, but still wary of Takeru's new form. As the battle in the Dream World begins to heat up, Takeru's rider of light appears once again...

The Dream World Takeru and the others were investigating was another one of Igor's schemes. Jiro, brother of Akari's professor, Yuichi Katagiri, insists that he won't leave the Dream World. The brothers' squabble catches the attention of the Grimm Eyecon and the Brothers Grimm themselves start having a discussion about fun. Due to this, Grateful Damashi can no longer be maintained and the Eyecon is stolen. A new Gammaizer has appeared as well.

In the meantime, Makoto and Alain, tasked with protecting Takeru’s body, confront a Gammaizer themselves in the real world.

Igor changes his strategy after Ghost Mugen Damashii defeats another Gammaizer. Takeru finally knows the true meaning of fun thanks to the Brothers Grimm. Also, a new Gammaizer that controls wind appears before Takeru. Deep Specter and Necrom are being attacked on all sides. Alain cannot stand the idea that he might not be able to protect the treasures of this world. Meanwhile, Bills attempts to put his own plan into action by attempting in on an idol, to which Akari decides to replace. Apparently, this plan is connected to his goals from his own childhood. In order to re-inspire belief, Sanzo sends Alain to a training field in another world. But Akari and Onari also seem to be targeted by Igor's plans as well...

After confirming that she hears other people's thoughts, Takeru visits Honami's group members once again in order to help. Honami hears their thoughts, still saying only bad things about her. On top of that, Igor has set a Gamma on her due to her power and she feels now, more than ever, like quitting for good. Alain, on his part, is on the verge of defeat as well in the trial world he was sent to by Sanzo. Akari, who for some reason passed the audition for harp+y 4, is now faced with Honami's pressure but she decides to give her best.

Meanwhile, Makoto encounters his other "self", the one Kanon told him about.

In the Gamma world, the Gammaizers talk to Adel and tell him it is time to obtain new power.

Jabel become frustrated due to fight always lose. Jabel in vented anger by damaging the forest. Takeru and his friends tried to make Jabel quieter. Onari Takeru who asked that she only entertaining Jabel. Adel and Gammaizers appear together Takeru challenged to a fight. All the heroes spend Takeru for help. But all the heroes it easily defeated by Gammaizers. More striking the Gammaizers joined to the body of Adel. Adel became very strong. Makoto meet again with Copy Makoto. The effects of the defeat Copy Makoto into the wound for the Makoto original. Takeru tried to rebuild the trust of the heroes who lost a fight. Confidence heroes to Takeru grew after the fight Gyro together.

The meeting between Adel, Alia, and Igor commence. At the beginning of the debate Igor gets a blow from Alia. While Adel "defeats" Alia when she changes into Dark Necrom, his strength is still not comparable with the Gammaizers. Takeru encounters a debate in the house of a Father and a daughter. After arguing they were attacked by a Gammaizer. The Gammaizer appeared to look weak compared to the previous but the soul of the father and daughter swapped bodies. Billy the Kid appears and enters the body of Kanon. Takeru works to help resolve problems between the father and daughter. The father turned out to have a new relationship with the fugitive known by Mayu the daughter. While the Dad was in the Gammaizer's body, Mayu in her Dad's body, and the Gammaizer in Mayu's body, can Takeru and the gang solve this mystery and find out what he's after?

In an effort to help Mayu and her Father - Shinichiro - Takeru and the others help Mayu to solve the source of a leak in her Father's workplace - which her Father's partner suspects is her Shinichiro...

Takeru only has 19 days left. Feeling uneasy at the fact that he is apparently losing his humanity, he talks to Akari. She assures him that they will do whatever they can to help him revive. However, Takeru is troubled by his powerlessness. He calls the Hermit but Akari is infuriated at the old man's response. Beethoven possesses Akari in her rage, greatly increasing it and causing a ruckus at the Tenkuji Temple. Everyone tries to think of a solution.

Meanwhile, in the Gamma world, Edith has decided to put a stop to Adel. He obtains an Eyecon when Adel tries to connect with the Great Eye, however he only managed to break the connection and send Adel into the human world. Adel and Edith fight. Takeru and the others come to his aid. Edith and Takeru's encounter will lead to the truth about the Gamma World.

Edith makes an attempt to stop Adel but had it not been for Takeru's intervention, he would have perished. At the Tenkuji Temple, Edith finally explains the workings of the Gamma world, whose origin is something completely unexpected for the rest. Edith was behind the creation of the Eyecons and the Gammaizers.

Adel makes an appearance again and it is now Makoto who gives his all facing him. However, he is defeated and suffers major injuries.

Adel tries to connect to the Great Eye again and he is rejected.

Adel's anger now fully directed towards Takeru, he makes a third appearance in the human world and this time Alain faces him.

The people at Tenkuji Temple have become united once again and are now joined by the Hermit/Edith. They pay a visit to Ryu's grave where Takeru vows that he will come back to life.

Meanwhile, after losing to Takeru and destroying his Eyecon by himself, Adel returns to his real body and enters a dormant state.

A new client visits the temple, saying that their child is behaving strangely. He is writing long, complicated mathematical equations and singing strange songs. Takeru and Onari go investigate but find something unexpected.

Igor's Demia plan is about to be set into motion and a countdown begins. Adel connects with the power source.

Adel's plan is to use Demia to make the human world the same as the Gamma world. Takeru decides to start by destroying the Demia servers.

Hiroki has had his soul and body separated. Takeru enters the memories of those connected to Demia. He transforms into Ghost Beethoven Damashii and uses music to help the people recover their memories but...

Adel has connected to the Demia network and taken control of everyone with the intent of becoming a new world himself. In order to stop this, Takeru, Makoto, and Alain transform and face all the revived Gammaizers. In that moment, Takeru taps into Adel's childhood memories. What he sees surprises him...

Takeru believes he can stop Adel's rampage by connecting with him. He tries but Adel responds by ordering the Gammaizers to eliminate them all.

Everyone vows to do what they can while Takeru is invisible. Meanwhile, the Gammaizer want to evolve. They order Copy Makoto to study how humans convert feelings into power because Takeru is the key to everything. Takeru watches people get connected to the Demia network when suddenly he gets a headache from all the voices.

After evading its attacks, Ghost Mugen Damashii is able to connect with the Perfect Gammaizer.

Takeru witnesses Adel's sad memories of losing his mother. Adel, on his part, connects with Takeru's sad memories of the loss of his father but the words he gives Takeru are completely unexpected…

"I killed your father."

Adel is Ryu's murderer?! Takeru becomes unable to hold back his rage.

Edith, as Kamen Rider Dark Ghost, welcomes Takeru, Makoto, Akari, Kanon, and Onari to the Gamma World and brings them to Adel but they are stopped by Igor and other Gamma. Igor approaches Akari and she decides to slap him repeatedly until he snaps out of it.

Takeru is on his last day of life as the Ganmaizers revive once again and assimilate Adel's body in order to create an entity completely fused with the Great Eye! The Ganmaizers have decided that humanity deserves to be eradicated, due to their inconclusive emotions and systems of logic and reasoning. Takeru is forced to watch them destroy large sections of the city! Makoto and Alain fail to stop them as their power is greater than normal! All hope lies in Takeru who tries to deal a final blow to the Ganmaizers but to no avail! They watch as they begin to disappear large amounts of people from the city...

Takeru and the others go to Ryu's tomb to let him know that Takeru was able to revive. The Gammaizer menace is no more and everything has gone back to normal. Takeru has returned to school and is being helped by Akari to catch up with his studies. Alain looks up to the blue sky and makes a decision. Makoto, who with Kanon has seen off Takeru, lets his sister know of a decision of his own.

A strange young boy holding a mysterious artifact appears and says: "The one with the power to change the world." What is the meaning of these words? The boy is attacked by the black Kamen Rider that appeared before.

Emu, a clumsy pediatrics intern takes young Sota, who is suffering a mysterious illness, to the announcement event of the latest "Mighty Action X", Sota's favorite game. Emu became a medical doctor in order to save someone's life because his life had been saved once through surgery.

However, a mysterious virus emerges from Sota's body and the event turns into chaos. Emu hears from Asuna, an employee of the Ministry of Health, that transforming into a Kamen Rider can save the patient. Emu takes on this "operation" and inserts the Mighty Action X Gashat into the Gamer Driver, transforming into Kamen Rider Ex-Aid!

Becoming Kamen Rider Ex-Aid, Emu now must serve as both a pediatrician and a member of CR. A gifted surgeon named Hiiro Kagami comes back from the United States and is not only the son of the director, he’s also Kamen Rider Brave. This results in a clash of ethics when it comes to dealing with patients.

Emu follows a patient who’s fled in fear of a doctor and encounters Taiga, who transforms into Kamen Rider Snipe. Once Emu learns of the past connection Taiga had to CR, he visits the dark hospital Taiga resides in to rescue the patient.

Emu cannot transform into a Kamen Rider since Taiga stole his Gashat. Medical Examiner Kiriya Kujo appears before a crestfallen Emu. He brings a Bugster-infected patient and offers to steal back Emu's Gashat in exchange of helping Kujo out with his prodigious gaming abilities.

When the thief of the 4 new Rider Gashats is infected with the Bugster virus, Emu and Hiiro clash about saving his life or not, and the identity of the mysterious Kamen Rider that is attacking the others is finally revealed.

The girlfriend of the student that the Bugsters were after has contracted the Game Disease. Hiiro transforms into Brave and succeeds in separating the Bugster from the girl.

A hospitalized patient showing two symptoms of the Game Disease has appeared. Emu and Hiiro transform and succeed in separating the two Bugsters from the patient. But Genm appears again to interfere, letting the Bugsters escape.

Taiga manages to capture the Bugster which escaped in the last episode and obtains the Jet Combat Gashat, holding the Bugster, and thus the patient, hostage in exchange for the other Riders' Gashats. When they arrive to challenge him, he decides only he is needed to fight the Bugster, and tries to destroy Ex-Aid and Brave.

Graphite infects the Deputy Director-General of the Ministry of Health with the Bugster Virus, while the doctors at the CR fall out over the most important course of action: Save the Patient or defeat Graphite?

Unable to control the powers of the new "Drago Knight Hunter Z" Gashat only by himself, Emu discovers that to do so he must convince the other Kamen Riders into join forces with him. Once he tricks them into doing so, the time comes for their showdown with Graphite.

Emu gives Kiriya another chance to earn his trust. Kiriya then takes the chance to finally reveal Kuroto's intentions and expose him as the Black Kamen Rider that is working with the Bugsters.

With Christmas around the corner, Emu runs against time to defeat the Salty Bugster again and save another patient, while Kiriya's investigation leads him closer to the truth, but his life is in danger when he faces Kuroto's new power.

With the Bugster infection spreading rapidly, the authorities can't hide the disease from the public anymore. After Kiriya's death, Kuroto starts targeting the other Kamen Riders for their Gashats, but Parad approaches Emu, offering him a blank double Gashat which will allows him to attain a new level of power…

Ex-Aid, now as two, get into an argument about defeating Genm or the Aranbura Bugster. They both seem to be Emu, but Genm and the Bugster take this opportunity to escape. Emu reverts to his human form and falls unconscious.

Wanting to save Dr. Shirakawa, Emu asks Hiiro to perform a surgery on his cancer. He has his Gashat back and faces the Aranbura Bugster to also cure Shirakawa's game illness. Will the surgery succeed? What will happen to Ex-Aid?!

Taiga tries to find out more about Emu's infection, and starts to discover the secret that might be why Kiriya was killed. Meanwhile, using data collected from fights with Mighty Brothers XX, Parad makes his move and reveals his new form: Kamen Rider Para-DX Level 50.

Emu thinks Taiga and Hiiro attacked him since he is the source of stress for Nico, who is suffering the Game Disease. He does not realize the true intention of the other two riders is to eliminate the Bugster virus residing in Emu himself, who is unknowingly infected with the disease as well.

Brave attacks Ex-Aid again but Revol Bugster and some grunts appear to…defend Emu! He is further convinced he is the source of Nico’s stress. Genm Level X appears and attacks both riders. He succeeds in stealing all of Hiiro’s Gashats and seems intent to do the same with Emu’s.

A lovable hamburger Bugster named Burgermon appears. Emu transforms into Ex-Aid, but attacking it causes the game disease patient to suffer from stress. What is this?

The CR accommodates an employee of the Genm Corporation’s development department. A game called Ju Ju Burger is under development with a game virus infection, and Burgermon seems to be separated from the game. Burgermon acts like an adorable child; he doesn’t seem so bad. As expected, Emu will have to deal with what’s in control of his head.

"Hiiro, are you hiding something from me?" Emu calls out Hiiro on the roof of the hospital. In the last battle, Genm tells Emu that he saved the Bugster because his body told him to do so. Emu also suffers from serious headaches after every transformation since creating the Mighty Brothers XX Rider Gashat. And most of all, Emu is incompatible with the surgery and yet he can still transform into a Kamen Rider. Everything is starting to come together, so what will Hiiro's response be? Meanwhile, Kuroto Dan returns to Genm Corp., and using the Gashacon Bugvisor, he begins to spread the Bugster Virus...

Emu finally learns of the horrifying truth that he has the game illness. The Bugster virus in him acts up and he collapses to the ground, though for some reason no Bugster has appeared...

Emu later wakes up in CR with his personality completely changed to that of "Genius Gamer M". When a new Level 30 Bugster emerges, Emu transforms into Ex-Aid with delight, and fights as if he were playing a game while no longer concerning himself with the patient. Just what has happened to Emu?

Taiga and Nico meet a high school student named Daisuke who is infected with the Bugster Virus and calls both Emu and Hiiro for their help. Parado suddenly appears and Hiiro faces him in his new form while Emu is hesitant on joining the fight.

Emu and Hiiro learned from Poppy that Kuroto was the one who had suggested Emu to CR. Meanwhile, a police detective is investigating the Zero Day case, causing him to interrogate Kuroto's father, Masamune. During the investigation, he gets infected by the Game Illness. In order to save him, Emu confronts Masamune.

Kuroto falls victim to the Bugster virus and is aprehended by the authorities. Despite everything Kuroto did to him and his friends, Emu is determined to treat him, but the others are wary, wondering if saving Kuroto's life is worth the effort, or even if he will be grateful for it. On the other sides, Hiiro finds some very useful information from Kiriya Kujo's belongings while Emu receives an emergency call that a Bugster is rampaging on a certain location.

Recovered from his infection, Kuroto resumes his plans to complete "Kamen Rider Chronicle" and the members of CR seem to have no way to stop him, until Taiga gives Emu a new Gashat that brings forth a power never seen before.

The fierce battle between Ex-Aid and Genm has now come to an end. Meanwhile, a woman who was injured, Sora, is brought to Emu and Hiiro. Sora's band members argue, when suddenly all 3 of them are taken over by Bugsters! And on top of that, when Emu tries facing them alone, a young man appears yelling, "Yossha Lucky!"

Recently, Emu has been feeling a little worried. He is very quiet and hasn't talked much since Poppy Pipopapo suddenly disappeared. Just then, Hiiro is shocked by the sheer number of emergency calls coming to CR, all reports of the game illness! As the only CR doctors, Emu and Hiiro rush to the indicated locations, but what they find there is an unbelievable sight...

Kamen Rider Chronicle has already begun! Para-DX has joined the game and defeated the first round of the general players, giving them a Game Over as Emu watched them disappear before him. Kamen Rider Chronicle is being sold at an extremely fast rate, which catches the attention of the Ministry of Health. To avoid any form of confusion, Kyotaro Hinata orders a temporary halt on the actions of the doctors in CR. However, a game disease patient escapes from CR in an attempt to cure his own game disease, which leads Emu to chase after him. Then suddenly, Poppy Pipopapo appears before them with a new Driver and a Rider Gashat of her own…

Thanks to the public announcement by the Ministry of Health, the number of Kamen Rider Chronicle players seems to have decreased significantly, which would subsequently reduce the amount of game disease patients. However, unbelievable information about Kamen Rider Chronicle is released by Ren Amagasaki, the new CEO of Genm Corp. There is a hidden component inside Kamen Rider Chronicle, one that is said to dramatically increase player participation! However, Taiga, who was suspicious of the love and go CEO's actions, goes into Genm Corp. to confront him himself...

Emu managed to notice Poppy smiling after the Rider's battle against Lovelica. With her sudden change of heart, Emu believes that she was suddenly swept up in all the commotion. Although he was attacked by Kamen Rider Poppy, Emu does not believe she is a bad Bugster. When Kamen Rider Chronicle starts up once again, Poppy Pipopapo is summoned. When Emu confronts her, he shouts "You aren't like this!" to her, just as she appears to deliver the final attack at the Riders who violated the game...

It was Emu who managed to return Poppy Pipopapo back to normal thanks to the bond they share, but it was not a time for relief. Suddenly Parado begins to manipulate Emu! "Let's do this, the most exciting of all games!" Emu managed to remove the Gashat Gear Dual that transforms Parado into Kamen Rider Para-DX and uses it himself! Just what on Earth is going on?! Finally, the points connecting Emu and Parado are beginning to reveal themselves...

Ex-Aid, Brave, and Snipe have all been defeated at the hands of Kamen Rider Para-DX Level 99! Also, Parado begins to manipulate Emu's body as his own in order to retain the infection. Much to the other Rider's surprise, Poppy brings out another Proto Mighty Action X Gashat and a Gamer Driver! Poppy had found them thanks to her revived memories of a young Kuroto. What is the meaning behind this Gashat? Poppy manages to use the power of Level 0, in the hopes of bringing Emu back to normal...

No one can hide the fact that they are upset about Kuroto's revival. How was he able to return? What is Kuroto's true intention by making this Continue a reality? Meanwhile, Emu cannot forgive what Kuroto did to all those patient's lives. He realizes that in order to eliminate Kamen Rider Chronicle, his cooperation is required, but Emu is getting tired of his attitude...

Ex-Aid and crews have gained the right to challenge the advanced Bugsters in order to clear Kamen Rider Chronicle. The three advanced Bugsters are Parado, Graphite, and Lovelica. The time of the final battle against the four Kamen Riders is at hand! At last, the curtain rises on the scene of the last battle! However, a disturbing darkness suddenly begins to appear...

Masamune Dan as Kamen Rider Cronus instantly killed Lovelica with his Pause attack, which freezes the game in time! The Bugsters and CR are greatly upset by Cronus' sudden appearance, Parado frozen in fear. Furthermore, it seems that the Proto Gashats being monitored by the Ministry of Health have been stolen by him! Now the doctors have been deprived of the data of the past Ride-Players. Emu goes to visit Masamune Dan, once again the CEO of Genm Corp. ...

The fact that Hiiro has betrayed Emu weighs heavy on the members of CR. If Hiiro is working with Masamune, then there can only be one reason for it. With everyone on the ropes about the situation, suddenly both Parado and Graphite show up in CR! To counter against Cronus, they ask Kuroto about Kamen Rider Chronicle's final boss, Gamedeus, the only being who can defeat Cronus. Just then, Brave confronts Ex-Aid as he is responding to an emergency call...

Apparently Hiiro wasn't the only accomplice that Masamune had in the palm of his hand! Cronus suddenly summons Kamen Rider Lazer Turbo Level 0 into the fight! In order to further expand the presence of Kamen Rider Chronicle around the world, Lazer Turbo stands before the Doctor Riders in an attempt to keep them from ending the game! Much to the shock of everyone, Kamen Rider Lazer Turbo finally reveals his identity...

Genm Corp. announces a new addition to Kamen Rider Chronicle, the "Cronus Capture Quest", and despite knowing what dangers lie ahead, countless new players join the game! Meanwhile, Emu is still reminded of the message Kiriya said to him before Masamune took him away. Kuroto completes an invincible golden Gashat holding an unbelievable amount of hidden power! Ex-Aid and the others rush to stop the "Cronus Capture Quest" as Brave and Lazer Turbo stand in their way once again...

Ex-Aid finally went Muteki and was able to beat Cronus! Masamune, who does not like the fact that Ex-Aid was able to attain a power that exceeded his control, angrily forces Hiiro to work for him as he claims Saki as a hostage! Brave forcibly renews his resolution, and this time he is able to transform into Legacy Gamer Level 100! Emu is more confused than ever, while Taiga is the only one who truly understands just how painful Hiiro's decision truly is…

Graphite mercilessly attacked the body of Taiga which forced him out of his transformation! The injured Taiga has been rushed to the hospital immediately, but there is a high possibility that his heart has been damaged. Moreover, it seems that it would take an expert-level of surgical expertise in order to save his life. After returning to Masamune, Hiiro's father and Asuna make an urgent phone call. The director asks Hiiro to perform Taiga's surgical operation. Just what decision will Hiiro come to in the end?

In order to deprive Ex-Aid of his transformation abilities, Cronus decides to target Parado directly. Para-DX without Emu is still not perfect, so he is beaten easily. Even so, Ex-Aid cannot stop chasing Cronus. However, Cronus was planning an underhanded scheme. Nico's game disease, which just started to show symptoms, belongs to that of Gamedeus, the Last Boss of Kamen Rider Chronicle! In order to defeat Gamedeus, Ex-Aid has to defeat both Graphite and Parado! Just then…Parado's hands begin to shake violently…

Parado has been defeated, and Emu has lost the ability to transform into Ex-Aid! Following Parado's annihilation, the other Riders team up in order to defeat Cronus. Brave, Snipe, Genm, and Lazer Turbo, all alternate the Hyper Muteki Gashat in order to counteract Cronus' Pause. Meanwhile, Emu was deep in thought. The fear of death that he felt at the moment of his extinction, even if he was a Bugster, he shared the same feeling as he did in that moment. Just then, Emu takes out the Mighty Brothers XX Gashat…

Kamen Rider Chronicle has been reset thanks to Masamune's special ability! Thanks to his Bugster infection, his hidden power has awakened, and the game is reset to the moment before Emu received the Hyper Muteki Gashat! Finally, with Parado having already been defeated, Graphite is the only game character left in order to clear Kamen Rider Chronicle! Brave and Snipe both challenge Graphite with a burning fighting spirit. Meanwhile, Emu believes that Graphite infected with Gamedeus' virus may be the only one strong enough to defeat Cronus. However, Graphite refuses to cooperate with the Riders…

The Last Boss of Kamen Rider Chronicle, Gamedeus, is finally born! If you defeat Gamedeus, then the game will end! However, at the moment of Gamedeus' revival, massive amounts of the Bugster Virus spread throughout the city! The number of infected patients are increasing, as well as the number of people being rushed to the hospital. While the doctors attend to the patients, Ex-Aid and Para-DX team up to fight Gamedeus! But their strength is far too weak against Gamedeus, as he sends them flying easily. At the same time, two people were confronting each other. Kiriya and Kuroto, both transformed, clash fists to see who's fate will be decided in the end…

Suddenly, the Gamedeus virus begins spreading through the streets! Masamune becomes Gamedeus Cronus and appears before the other Riders, as he summons Nico into the World of Kamen Rider Chronicle! Nico is the one who is qualified to challenge the Last Boss of Kamen Rider Chronicle as a Ride-Player, but it seems clear that Masamune is going to try to Game Over the player who is closest to beating the game in order to reset it. In an attempt to save her but unwilling to let the others follow, Taiga uses the Chronicle Gashats seized from patients and goes to find her. However, the other Riders cannot enter the World of Kamen Rider Chronicle! Just what will happen to Nico's fate?

Gamedeus Cronus has grown massive and become the strongest Last Boss! The Gamedeus Virus expanded and the pandemic has gotten worse. The Gamedeus Virus can now be transferred from person to person, turning the infected into Bugster Virus foot soldiers! Two Bugsters witnessing this symptom, Parado and Poppy Pipopapo, decide to take action. "There is something that only us Bugsters can do…" Poppy says as she rushes to Ex-Aid…

Though Gamedeus was finally destroyed at the cost of Poppy Pipopapo and Parado when they extracted the Bugster from his body, Masamune Dan survived and takes advantage of Emu no longer being able to use Hyper Muteki. The Kamen Riders are at a huge disadvantage, while Cronus doesn't hold back, and initiates Pause. All of the Kamen Riders' movements are frozen in time, and he prepares to kill them, starting with Emu…