Shotaro is injured defending the video game idol, Megu Kazamatsuri, leaving Philip in charge of the investigation. But can he and Tokime put aside their differences to protect their client?

After a flight of fancy leaves Shotaro and Philip stranded in the mountains during a blizzard, they stumble onto a mansion that hosts a bizarre ritual.

Tokime tries to help Rentaro escape Shadow Fuuto, as the Kamen Riders track down Reactor's hideout.