After being incarcerated for drug trafficking, Momo is released from prison. The return to the outside world is not kind to him. His father drives him out of the family home and he has to stay with his sister, who lives with her little girl. It is thanks to her that he meets Gilou, a salesman familiar with trade techniques from the United States. He soon found himself employed with him in the plumbing company Gutti Frères. For his first mission, he is associated with Batavia, in whom the brothers have complete confidence. But he quickly reveals himself in his true light: a lazy and incompetent racist. His second mission does not go under better conditions and Momo is fired.