Los Angeles policeman Carter is lively and talkative, while Chinese policeman Li is serious and alert. This pair of people who are originally incompatible and have such a huge contrast in personality will certainly cause countless troubles when they get together. Fortunately, the two are like gods, and they can always solve all the cases that are under their jurisdiction and those that are not under their jurisdiction. The story begins on the streets of Los Angeles. Carter is still affiliated with the Los Angeles Police Department, but his position and identity have changed. He has become a traffic policeman who pokes people on the road every day. Don't ask Carter how he became a traffic policeman, because I am afraid that even he himself does not know which of the many mistakes he made has implicated him, and he doesn't care anyway. Just when Carter was maintaining the normal operation of traffic, the International Crime Court on his neighboring street was holding its first hearing. The participant, Consul Han, accompanied by his good friend Officer Li, took out the evidence of a mysterious Chinese criminal group he had, and also involved the Sanhe Society, the largest criminal organization in the world. Consul Han was commissioned to investigate the matter, but before he could find out the whole truth and tell it, he was assassinated. Officer Li felt guilty for not protecting Consul Han. He chased the murderer frantically, all the way down from the rooftop of a skyscraper. He was about to catch him, but was blocked by a car that rushed out. Yes, the driver was Carter. He heard the noise and quickly borrowed a car to rush over to support. As always, one of Carter's best skills was to make things worse. Although Officer Li had no way to catch the murderer after being messed up by Carter, he was sharp-eyed and still saw some clues. It turned out that the murderer was named Jianer, who was Officer Li's buddy in the orphanage, but now he has become one of the main members of the Sanhe Society. The good brothers who grew up together became soldiers and thieves because of different pursuits and beliefs, so the love and hatred between them was equal. Before his death, Consul Han had discovered that the secret that the Sanhe Society desperately wanted to hide was hidden in the heart of Paris. Carter and Li followed this clue to Paris to find out the truth in this place that did not belong to them. They did not understand the city, the language, or even what they were looking for. Carter and Lee rushed from the depths of Paris' underground to the top of the Eiffel Tower. They not only had to stop a global criminal conspiracy, but also had to protect their old friend Consul Han's grown-up daughter, Su Yang. They were ready for the next upcoming sharp moment.