Karate master and anti-drug vigilante Chiba returns to his home in Japan, where he holds a press conference announcing his intention to wipe out the nation's drug industry. He also offers his services as a bodyguard to anyone who is willing to come forward and provide information about the drug lords' activities. He is soon approached by a mysterious woman claiming to have important information and asking for Chiba's protection. She seems to be legitimate, but is she really what she appears to be?

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.