Martial arts expert Detective Nick Chen (Chow Yun-Fat) teams up with his colleague Danny Wallace (Mark Wahlberg) to keep several gangs in New York City's Chinatown from annihilating each other. They must contend not only with the increasingly power-hungry gangsters, but also with the temptation of bribery and corruption as the bad guys divide and conquer the police forces. In what's beginning to seem like a losing battle, Chen and Wallace struggle to establish law and prevent more bloodshed.