Jim Boy, a villainous man who escapes from the place where he was hanged, vows revenge on Detective Arimura, who captured him. Goro Tachibana, a young boy who joins the Arimura Detective Bureau, astonishes those around him with his skill with guns and martial arts. Meanwhile, Jim Boy's first target after escaping from prison is the champion of the professional wrestling world, Dairikzan. Knowing that his life is being targeted, Daikiyama asks Arimura to protect him. Goro is enthusiastic about his first job, but...