Manga adaptation of 1975 Fuji TV's Denjin Zaborger tokusatsu series. Secret Police agent Yutaka Daimon returns to Japan after learning his father was murdered by the evil Dr. Akunomiya, leader of the criminal gang Sigma. From his father Yutaka inherited the robot warrior Denjin Zaborger, made out of the mysterious metal Daimonium which responds to Yutaka's voice commands. Zaborger has the unique ability to transform into a motorcycle, Machine Zaborger, for Yutaka Daimon to ride.