Detective Kouichi Todome head of the elite Kerberos police squad escapes after the unit is marked for destruction by the government. Three years later, Inui, a member of the squad, is released from prison with one goal: to find his former master. But the trail to Todome is a twisted one, and when Inui finally finds Todome, he realizes that instead of following his own path, Todome was following the orders of another.
In the film, the Crisis Empire devise a plan to defeat Kohtaro Minami by reverting him back to his old form of Kamen Rider Black and sending out several revived monsters after him. However, Kamen Rider Black is assisted by another RX, who used a time warp to help his past self. The two are joined by RX's alternate forms of Robo Rider and Bio Rider and the four Kamen Riders combine their powers to defeat the revived monsters.
Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.
