After Tokyo police officer Yokoda is killed in the line of duty, his chief decides give Yokoda's body to Dr. Tani for use in a secret scientific experiment: Yokoda's brain will be transplanted into a super-powered robot body, making him into an unstoppable policeman of the future. The supercop develops problems, however, when he begins to remember his human past. Then there is the matter of Dr. Tani's other cyborg, who has become a super-powered homicidal maniac.

Kai Shishido
as 8 Man

Etsushi Takahashi
as Inspector Tanaka

Sachiko Ayase
as Sachiko

Joe Shishido
as Dr. Tani

Osamu Ohtomo
as Ken

Tadao Nakamaru
as Yamafuji

Daisuke Shima
as Detective Sawaki

Toshihide Wakamatsu
as Detective Yokoda

Mickey Curtis
as Sniper

Robert Axelrod
as (english version) (voice)