Shinji discovers the truth of becoming a Kamen Rider and the battles yet to come while a school becomes haunted by the emergence of a pack of Mirror Monsters. Suddenly, a mysterious figure from the mirror appears in front of Shinji, urging him to fight for his own destiny.

As Ren tries to learn about Yui's past, Miyuki felt time is running short when Shiro targets him for death for disobeying his desires for the Rider Fight. In the meantime, Takeshi kidnaps Goro to force Shuichi to fight him face to face.

Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it herself later and begins to panic, and she calls Ren to pick her up.

ORE Journal is seized due to the failure of the Mirror Monster scoop. However, Chief Editor tells Shinji that as long as his PC is in hands, the ORE Journal will continue to exist.

A child version of Yui appears inside the mirror, and warns present Yui that on her 20th birthday, she'll disappear.

Reiko orders Nanako and Megumi to spy on Shuichi.

Asakura tells Tojo that he was really the one that killed Mitsuru.

One of the Sheerghosts begins to multiply, creating thousands of them.

Shiro tells the remaining Riders to finish the battle in three days. Otherwise, no one will get their wish.

Shuichi has in fact not died and is recovering in hospital.

Yui tries to jump off of a high building to stop the Rider War but Shiro prevents her.

Reiko and Chief Editor trying to solve mystery about Mirror World and Kamen Riders.

Reiko discovers that Shinji is a Kamen Rider.

This episodes marks the revelation of the Mirror World and Shinji's identity as a Rider to Reiko, as well as Yui's final appearance.

With his status as the last Rider standing, Ren faces off against Odin in order to grant his wish, while Asakura prepares for his final battle against Kitaoka once and for all. Later, Asakura successfully kills Zolda only to realize it was Goro the whole time, only for him to be gunned down to death by the police. After hearing Yui's appeal to stop the Rider War, Kanzaki finally realizes the pointlessness, while Ren is the sole surviving Rider with his wish granted.