During Spring Break the gang decide to try and make the most of what should be a Zodiarts free time, however, Kijima tries to recruit Ryuusei to his side whilst playing a deadly game with students. And those who don't win are placed into permanent comas.

The Cancer Zodiarts threatens the members of the Kamen Rider Club now that he has attained the Supernova ability. While he still cannot transform, Ryusei discovers that Jiro's condition has taken a turn for the worse.