Martin Riggs and Roger Murtaugh, each now feeling too old to be doing what they’re doing, try to stop the Chinese Triads from doing their illegal business in the U.S. Uncle Benny, Chinatown’s mob boss, has imported Chinese slaves to pay for an artist to create counterfeit Chinese currency which the Triads (led by Jet Li) will use to buy the Four Fathers (heads of the Triads) back from the Chinese military.