Third instalment of the popular action series starring Chris Tucker and Jackie Chan. While in Paris, Chief Inspector Lee's (Chan) latest assignment is to escort and to protect Chinese Ambassador Han (Tzi Ma) as he delivers a major address before the World Criminal Court Summit in Los Angeles. While delivering his announcement, he is shot and nearly killed. Meanwhile, former LAPD Detective James Carter (Tucker), who has recently been demoted to traffic duty, just happens to be listening to the radio when the tragedy occurs. He rushes to the scene to help, but instead interferes with Lee's pursuit of the culprit. To get his status back, Carter teams up with Lee one more time to help track down the assassins. With the trail leading to Paris, both will find themselves in unfamiliar territory.