A beautiful and young American woman is found murdered in her Tokyo apartment. Rookie F.B.I. agent Sam Hart is sent to investigate. His investigation leads him into the heart of Tokyo's underworld where sex, drugs, and corruption go hand in hand. Agent Hart uncovers that the Japanese mafia, the Yakuza may be responsible for the young womans death. He soon finds himself in the middle of a possible gang war where enemies and allies allike are unknown. He soon must decide who he can trust, the police or the Yakuza themselves.