Plot
As the whole world watches the Choujin Rugby game on TV, the "Underground Space Emperor" Hydra King has his Underground Space Supermen kidnap Robin Mask. Their aim is to lure out the Seigi Choujins and then attack them using the Robin Memo, which contains info on all of the Seigi Choujin's weaknesses. Watching on TV all over the world, Kinnikuman and the Seigi Choujins get together and head for Planet Hydra.
Trailer
Trailer's not available.
Cast
Akira Kamiya
Minori Matsushima
Sanji Hase
Hiromi Tsuru
Chisato Nakajima
Hideyuki Tanaka
Kaneto Shiozawa
Hideyuki Hori
Keiko Yamamoto
Kazuhiko Kishino
Nana Yamaguchi
Eiji Kanie
