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.

When Darkwing appeared to scare a student, Shinji inquires further about Ren after suspecting that he had a darker intention in his means as a Kamen Rider. However, Yui denies Shinji's accusation about Ren's act as Yui explains to Shinji about Ren's true purpose of fighting.