After successfully completing two cross-border missions, the serious and alert Detective Li (Jackie Chan) and the garrulous Detective James Carter (Chris Tucker) are faced with an even more difficult task this time. Consul Han, who was investigating evidence of the crimes of the "Sanhe Society", was assassinated. Police Officer Li, who was deeply guilty of running after the killer, frantically chased the killer, but was helped by James Carter, who was demoted to become a traffic police officer. Of course, their unique combination began the next day. On the one hand, according to Consul Han, they went to Paris, the heart of the "Sanhe Society" tried every means to hide, overcoming numerous difficulties and exploring the truth; On the other hand, they also have to protect Consul Han's grown-up daughter Su Yang (Zhang Jingchu), while the killer is Inspector Li's good brother Kenji (Hiroyuki Sanada) in the orphanage when he was a child. How did the two respond to the numerous crises? At the peak moment, Detective Li's Chinese Kung Fu will turn the world around.