The movie takes place between episodes 27 and 28 of the series, featuring the DenLiner and its passengers travel as far back as the Edo period of Japan. Ryotaro pursues the Molech Imagin to May 8, 2000. Though Den-O Sword Form destroys the Molech Imagin, the Imagin fulfilled his mission as the DenLiner ends up hijacked by the rest of the Imagin led by a rogue Kamen Rider named Gaoh who knocks Ryotaro out. After stealing Owner's Master Pass and trapping Urataros and Kintaros, Gaoh forces the DenLiner to travel back in time to the Edo Period of Japan so he can retrieve the legendary GaohLiner.