Li Qiang (played by Chow Yun-fat), a killer from the mainland, came to the United States alone. In order to bring his mother and sister who were still in his hometown to the United States for a family reunion, he had no choice but to borrow money from Mr. Wei, a gangster boss in Chinatown, Manhattan, New York. At this time, Mr. Wei's son accidentally fell to his death because he was escaping from the police during a drug deal, and Li Qiang just became Mr. Wei's pawn for revenge. Li Qiang was sent to kill Officer Stan, the person in charge of the anti-drug operation, and his family. When he found out that Officer Stan's son was only 7 years old, his concern for his family made him unable to do it. After the operation failed, not only was Li Qiang's life threatened, but even his family in the mainland were facing the disaster of being killed. In order to escape back to his hometown to save his family, Li Qiang and the killer sent by Mr. Wei started a wrestling match!