With Sonoda still absent from the school Gentaro's class gets a new homeroom teacher who is far more interested in Kickboxing than teaching.

Gentaro and the others are convinced that their new Homeroom Teacher is the Zodiarts that is currently rampaging, however, Ryusei figures out that the culprit is not their teacher.

With Kengo's death at the hands of Sagittarius Nova and the destruction of the Rabbit Hatch, a distraught Kamen Rider Club reads the final letter from the Core Child written before his death. A resolved duo of Riders must face the Horoscopes one last time to avenge their fallen friend and stop the Day of Awakening for good.