
Professor Daidōji has developed a gravity machine called the GX Device. Unfortunately, Shocker wants it; so they attack the professor and destroy his laboratory, but come home empty-handed. Shocker's agents find out that the plans for the GX Device are with Daidōji's daughter, who is celebrating her birthday. Now the Kamen Riders, along with FBI agent Kazuya Taki, must protect Daidōji's daughter and prevent Shocker from obtaining the plans.

as Hayato Ichimonji / Kamen Rider #2

as Takeshi Hongo / Kamen Rider #1

as Tobei Tachibana

as Kazuya Taki

as Dr. Shinigami

as Yuri

as Emi

as Mika

as Goro

as Dr. Daidōji

as Assistant Ano

as Tamami Daidōji

as Zanjioh (voice)

as Narrator (voice)