The Crisis Empire devise a plan to defeat Kotaro 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 RoboRider and BioRider and the four Kamen Riders combine their powers to defeat the revived monsters.
Directed by Yoshiaki Kobayashi
Tetsuo Kurata
Kotaro Minami / Kamen Rider Black RX / Kamen Rider Black
Seizo Kato
General Jark (voice)
Atsuko Takahata
Maribaron
Shozo Iizuka
Bosgun (voice)
Takayuki Kitamura
Gatezone (voice), High Priest Baraom (voice)
Kazunori Arai
Gedorian (voice), Gynagiskhan (voice)
Atsuo Mori
Chakram (voice), Deathgaron (voice), Tripron (voice)
Eisuke Yoda
High Priest Darom (voice), Musalabisala (voice), Tripron (voice)
