Leading an expedition in Germany, Kougami unseals the resting place of one of the alchemists that created the Core Medals in an effort to retrieve a set of lost Medals. However, upon the seal being undone, millions of Cell Medals erupt into a tower while creating a magical barrier that causes parts of Japan to flip over. As the alchemist reveals her plans to become a new OOO, Eiji and his friends are thrown into the past and must find their way back home and stop the alchemist before she destroys the world!
Shu Watanabe
Eiji Hino / Kamen Rider OOO
Ryosuke Miura
Shingo Izumi / Ankh
Riho Takada
Hina Izumi
Hiroaki Iwanaga
Akira Date / Kamen Rider Birth
Asaya Kimijima
Shintarou Gotou
Mayuko Arisue
Erika Satonaka
Takashi Ukaji
Kousei Kougami
Marie Kai
Chiyoko Shiraishi
