Ray and his friends are introduced to the world of the Kaijudo Duel Masters, a secret order of heroes sworn to protect mankind from fantastical creatures - and from the evil forces of "The Choten," who would use those creatures to conquer the world.

Ray, Allie and Gabe explore the wonders of the Kaijudo Temple and learn the basics of creature dueling. The Kaijudo Masters are impressed by Ray's abilities (but skeptical of his unconventional techniques) when he summons the powerful TATSURION.

Ray, Allie and Gabe visit the Temple Stables and bond with some new Creatures. Meanwhile, one of the Choten's followers releases a deadly threat in the Temple; the kids must join the Duel Masters and their Creatures in a battle to save the day.

The kids must track and banish a small Creature back to its realm. But when the Choten mutates the Creature and it starts to duplicate itself, things get complicated. Meanwhile, Gabe has problems controlling his new primary Creature, GARGLE.

After rescuing a baby fire creature from Alakshmi, Ray and his friends hide out at school, but are soon caught up in a dangerous game of hide-and-seek with the Choten's pursuing minion and her vicious puppet, Razorkinder.

When Allie is kidnapped to the Fire Civilization, Ray, Bob and Gabe go to rescue her. Along the way a stranger helps them get to Blastforge City where Allie and a Darkness Creature she names Squeaky are scheduled to become meals for Lord Skycrusher.

Attempting to rescue Allie from Lord Skycrusher, Ray and Bob are captured and forced to battle for their lives. Meanwhile, Gabe and Gargle fight to save Allie's new friend Squeaky from the castle chef even as the Masters race to save them.

A string of strange robberies proves to be the work of a powerful Light Creature - guided by new, bad-tempered bad guy HELLER. The kids' attempts to thwart the crimes result in Ray getting temporarily blinded before figuring out how to win the day.

When Mighty Shouter fails to respond to Master Kimora's summons, Ray and his friends travel to the Nature Civilization to investigate the strange abductions of Shouter's tribe by a mysterious force.

Master Chavez must replenish the Veil, and to do so he must siphon Mana from one of the slumbering Creature Civilization Kings - but the Choten plans to take possession of the Mana once Chavez has extracted it. It's up to the kids to stop him.

When Ray's memories are stolen by the Choten, the kids travel into the depths of the Water Realm to recover them. With "Reef Prince" Gargle as their guide, all goes as planned until they're charged with stealing a prized artifact.

Narrowly escaping the Water Civilization rulers after being accused of stealing their most powerful artifact, the kids team with Gabe's creature Gargle to prove that the Choten is guilty - and to stop him from getting away with his crime.

On a mission to hunt down a primitive Bigfoot-like creature known as the Roaming Bloodmane, Ray and the Duel Masters quickly discover there is far more to the beast than meets the eye.

In an attempt to ease the tensions of wealth vs. want amongst her friends, Allie hosts a girls' sleepover at her home - which soon turns into a Creature battleground as Alakshmi crashes the party with Gorgeon, Shadow of Gluttony.

To protect Bob's Quillspike family from a massive attacking creature, the kids go to the Nature Realm and duel in an arena competition to win the Shield of Unity - an artifact that compels all other tribes to help whichever tribe possesses it.

The Nature Civilization's Competition is disrupted, throwing Bob and Ray's claim for the Shield of Unity into jeopardy - and the Choten is involved. Meanwhile, time's running out for Bob's Quillspike family, as the massive attacking creature returns!

Gabe's twin brothers drag him along to explore an abandoned amusement park. When Fingers brings a new Darkness creature to hunt our heroes, Gabe finds an unexpected ally - and a new friend - in Sasha, a princess from the Light Civilization.

What starts as a normal trip to the movies for Ray and Allie ends up as a high- stakes battle of wits as the Choten and his minions come searching for the Helm of Ultimate Technology - secretly housed in the bank where Allie's dad works.

Allie leads an expedition into the Darkness Civilization, where the group endures a series of attacks that take a heavy toll as they make their way to the stronghold of a Darkness Lord known to wield great influence.

Empress Megaria attempts to keep Allie in the Darkness Realm as her new protégé, but has some competition in Alakshmi. Elsewhere, the rescue party devises a plan on how to enter the castle and return home with Allie.

Wanting to teach Carny a lesson, Ray and Bob find themselves stuck in the Fire Civilization with the bully, and they must work together to survive long enough to make it back home.

Princess Sasha returns, sent by the Light Civilization to study humans. In disguise, she attends school with our heroes, and is introduced to mean attitudes, cyber-bullies, and powerful emotions - all of which make her question humanity.

Sasha sends a message to Gabe that her home is under attack. Reaching the Light Civilization, the kids find Alakshmi, Fingers and Heller attacking Sasha's fortress in search of the final powerful Artifact - and they will stop at nothing to find it.

The Choten and his underlings attack Ray's apartment to get the 5th and final Creature Artifact. Making matters worse, the Choten activates a Summoning Inhibitor that prevents anyone or anything from crossing through the Veil.

Escaping from the Creature Realm, the kids help the Masters plan an attack on the Choten's lair. However, the Choten is prepared for them - and ready to put his plan to control both worlds into action!

As the Choten's plan appears to be falling into place, Ray, Bob, Gabe, Gargle, Allie, Squeaky and the Masters must do everything in their power to save Earth from a Kaiju apocalypse!

A war seems to be erupting between the Fire and Water Civilizations - and it's creating problems in San Campion. Each side claims the other started it, so Ray and friends go across the Veil to investigate - and find it's worse than they feared!

Ray and Bob are captured and enslaved by the Fire Army on a Volcano warship. Meanwhile, Allie, Gabe, Nadia and Chavez try to rescue Ray while keeping Cyber Lord Finbarr from launching a massive Water Civ. weapon at the Volcano-ship.

Ray and Bob set off on a rescue mission aboard Skycrusher's Volcano-ship, while Allie and Gabe investigate the Water Creature that supposedly started the whole war.

Having been promoted from Acolytes to Adepts, the kids discover a long-lost spell that temporarily bestows bizarre new powers and characteristics on their Creatures.

A reckless act by Carny and a snooping classmate threaten to expose Kaijudo to the world.

Cyber Lord Finbarr requests help from the kids to help prove to the Water Civilization that the Choten is secretly controlling King Tritonus.

Ray, Allie and Gabe return to the Fire Civilization in search of a Creature Mystic - whose magic could hold the key to a Duelist's salvation.

While visiting family in Japan with Grandpa, Ray encounters a Creature that grows to monstrous size when it absorbs Mana - and learns more than he bargained for, both about his family and about the mysteries of Kaijudo.

When Mana overloaded soil causes plant life to grow out of control on both sides of the Veil, the duelists find themselves in a battle with a gang of sentient and aggressive Wild Veggies!

Ray's family finally moves into a new home, and Ray gets a new job. Meanwhile, the Choten's henchmen begin a secret, baffling crime spree - and it's how they are pulling it off that causes a problem with our heroes.

While Ray investigates strange goings-on at the Carnahan Chemical plant, Gargle visits Gabe's house for the first time and has to fend for himself when Gabe's older brothers discover him!

A tanker truck full of the Choten's Evolution serum goes missing in the Darkness Realm - and Allie's mom Piper returns home, but Piper may not be all that she appears to be.

The Cloak of Dark Illusion's influence begins to overcome Allie and her loyalties are tested. Will she resist or will she succumb to its power?

A seemingly ordinary fishing trip for the kids and their dads, turns into a harrowing battle for survival at sea when the Choten's forces attack.

Ray, Gabe and Allie investigate when their classmates and family members are replaced by holographic lookalike Light Creatures.

Ray and Bob rush to the Fire Realm when hostile forces kidnap Bob's mother - and to make matters worse, Bob must face enemies from his past - the Creatures responsible for his being branded a traitor and chained.

A dream warns Ray of a new danger in the Nature Realm and he and his friends cross the Veil to help. While there, Ray also searches for the Mystic who might be able to give him the healing spell he has been looking for.

Ray, Allie, Gabe and Master Isao accidentally locate the Choten's ship but are unable to escape unnoticed, while Alakshmi attempts an unconventional method to free Sensei from her Mana-dampening armor.

Allie and Alakshmi are literally stuck with each other as they are forced to work together when they discover Nigel attempting to create a Veil breach. Meanwhile Ray and the Masters discover the Choten is meeting with the Darkness Realm Queen.

When a bullied kid steals Carny's tech-gauntlet intending to teach the bullies a lesson, he inadvertently opens the Veil, letting Creatures enter the school and take over everyone's bodies. Ray, Allie and Gabe must stop the invasion.

Ray decides to invite Master Isao over for a family reunion, just as Butterfly Effects begin to ravage San Campion. One family member makes an unexpected visit.

After the Fire and Nature Realms are hit hard by a massive attack from the Water realm, the kids assemble four unlikely Creature "friends" to work together to prevent the next attack.

Ray strikes a deal with the Choten. In exchange for a Spell from the Water Mystic, the Choten will give Ray an antidote to the evolution serum that has mutated his dad.

In an attempt to finally release Tritonus from the Choten's control and stop the rising war in the Creature Realm, the Masters must gather all five Creature Monarchs and their Artifacts together in the Kaiju Null Zone for a "Summit."

The Choten's plan for total conquest of both Realms is one step closer to reality, meanwhile the Kaijudo Adepts board his ship and discovers the intended use for the missing tanker of Evolution serum.

In the struggle to stop the Choten invading our world with an unstoppable Evo-Creature army, Ray earns the right to use the Spell of Purification he's been searching for - and faces the choice of saving his city but losing his father forever.