一名女武术家Billie与一支街头帮派结仇，自己的祖母也遭同一帮派的毒手被杀。在目睹了司法机构的无能与不作为后，她决定化身“夜猫”，自己走上了复仇的道路

After being left for dead, the man is rescued by two Japanese soldiers, living on a remote island, who teach him the ways of the samurai. Upon returning to the USA, he quickly exacts a bloody revenge on his tormentors and reunite with his wife and son.