Growing up in a poor gypsy camp, Edmond Vidal, also known as Mormon, has a sense of responsibility for his family, infinite loyalty and pride. In particular, he still maintains a friendship with Serge Shuter, who was imprisoned for theft. The two were inevitably involved in criminal organizations. In the 1960s and 1970s, the Ang Gang was notorious for armed robbery. The growing gang was curbed in the mid-1970s. Today, Edmond, who is over 60, wants to erase this period of life and find a place to withdraw from the business and turn to his wife and children who suffered in the past. His wife, children and grandchildren deeply respect this man for his frankness, universal values, clear mind and infinite kindness. But with the arrival of Serge Shuter, what kind of ripples will this indelible history set off... Behind the scenes Olivier Martial is considered the successor of the French gangster films of the 1960s and 1970s and the Melville era. Although his "36 Stations" and "MR73 Revolver" belong to the general category of commercial police and gangsters, the plots have a strong sense of reality and fate, showing the director's skills. His latest work "Gangs of Lyon" was recently released in France. The film has the ambition to become a French version of "The Godfather" and "Heat", but the reviews are relatively mixed. Some viewers think that the story of the film is very sincere, while others are concerned that its style is too deliberate and not unified. Olivier Marchal himself was a policeman before he became an actor. His first two works also told stories about policemen, but "Gangs of Lyon" turned the camera to their opposite side. "I don't want to glorify gangs. On the contrary, I show that the so-called sacred and inviolable friendship between men is just an illusion. My gangs either died violently or went to jail in the end, and there was no good ending."