A polícia de Nova York procura um instrutor de karatê para seus membros, e fica uma decisão entre Hironobu Nikaido e Kazuma Higaki. Nikaido pretende acabar com esse impasse acabando com Higaki e tirando-o de seu caminho. Higaki é derrotado e fica perto da morte, mas sua vida é poupada por Nikaido que começa a dominar o mundo do karatê. Higaki planeja vingança e começa a treinar sua filha Yumi Higaki. Alguns anos depois, Higaki morre e sua filha Yumi vai atrás de Nikaido buscar a vingança de seu pai.
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?
Attacking Asao Uchida's lonely, clifftop mansion in no-holds barred massacre.
A disgraced yakuza member, framed for the murder of his boss, emerges from prison eight years later with revenge on his mind.
An honorable yakuza syndicate deeply rooted in Kyoto fights for survival when a new breed of gangsters threaten their very existence.
