The Japanese ambassaor is visiting Marseilles to view the city police's anti-gang tactics. During the visit, however, he is kidnapped by a group working for the Japanese yakuza. Young officer Emilien is determined to rescue the ambassador and officer Petra (his girlfriend), who was also kidnapped, and restore the honor of his department. Once again, speed demon taxi-driver Daniel (from the first Taxi movie) is called upon to save the day with his high-speed driving skills.

Liu Jian, a police officer from China, comes to Paris to help the vice squad apprehend a Chinese drug lord and his unknown French connection. The French connection is Richard, the head of the vice squad, who intends to kill the drug lord then frame Jian. Jian ducks a bullet and escapes with a tape of what really happened. By chance, Jian turns to Jessica - a US farm girl who is one of Richard's hookers - for help. She has her own problems, including the fact that Richard has her daughter locked in an orphanage to keep Jessica on the streets and silent about his activities. Can Jian protect Jessica, rescue her daughter, and give Richard the kiss of the dragon?