The ORE Journal staffs discover the secret of Mirror Monsters.

Takeshi once again managed to escape prison.

Shiro threatens Kagawa for his attempt to seal Mirror World.

The 6 remaining Riders fight in a large battle against a large group of Monsters.

A new Rider appears.

Satoru finds out that Hideyuki has his own family, much to the dissatisfaction of Tojo himself.

Takeshi attempts to find Satoru by asking Shuichi, and later Shinji.

Shuichi finds Room 401, the room where Shiro Kanzaki worked.

Having learned the secrets about the Mirror World, Satoru attempts to kill Reiko.

Mitsuru Sano reveals himself to everyone as Kamen Rider Imperer, offering his services as an ally for cash.

Mitsuru accepts both sides' offer to ally with them but ultimately chooses Hideyuki and Satoru.

Shiro tells Takeshi where Satoru and Hideyuki are and tells him to kill them. Takeshi later finds out that they aren't there, until he confronts Shinji, Ren and Shuichi at the same time.

Reiko questions Shuichi about the thing that attacked her last time.

Ren is enraged by Shinji's decision to include Mitsuru as his comrade.

Hideyuki brings Satoru to lunch with his family to teach him the moral lesson about being a hero.

Satoru kills Hideyuki and shatters the Alternative Deck.

Takeshi tricks his new lawyer into showing him his belongings.

Ren learns that Hideyuki and Satoru are targeting Yui and confronts both of them.

Reiko's curiosity about Shinji's behaviour becomes even more stronger as Reiko learns that Shinji knows about Shiro Kanzaki.

After destroying two monsters, Satoru attacks Shinji from behind.

Yui is targeted by a monster that was at the Lab at Seimeiin University.

Yui discovers that the Mirror and Contract Monsters all came from drawings she and Shiro made during their childhood.