Kougami commissions the creation of a Cell Medal homunculus based on Nobunaga himself. Later, Kamen Rider Core begins to destroy the area as Kamen Riders OOO and W team up to fight the enemy.

Leading an expedition in Germany, Kougami unseals the resting place of ... As the alchemist reveals her plans to become a new OOO, Eiji and his friends are thrown into the past and must find ...