Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie Wars Core

In this film, Kamen Rider W receives unexpected help from Ryu as they confront the Pteranodon Yummy, a mysterious adversary. The plot thickens when Akiko, frustrated by Ryu's absence from her wedding, demands to understand his motivations for becoming a Kamen Rider. The use of the Memory Memory by the Pteranodon Yummy adds layers of memory manipulation and emotional stakes to the story.

As the action unfolds, the Kougami Foundation's involvement brings in historical figures like Oda Nobunaga, who is reimagined as a Cell Medal homunculus. With Doctor Maki overseeing this experiment, the plot explores themes of power and ambition. The film culminates in a climactic battle as Kamen Riders OOO and W must join forces to combat the overwhelming power of Kamen Rider Core, leading them to delve underground for a chance to destroy the source of Gaia Memory's power.