A returning veteran and karateka from WW2 starts working for the yakuza, looking for a man strong enough to kill him. After becoming a karate champion, he joins an Italian woman who is looking for revenge against the nazis who killed her family.

Kiba is back again, but this time he has fallen from grace and sent to prison for all the violent acts he has committed. Once he's out, he begins working as a bodyguard in a club that is crawling with gangsters.