Francois (Jean-Paul Belmondo) was framed as a drug-trafficker by none other than the head trafficker himself and spent seven years in prison for his supposed crimes. Now an ex-con, the vengeful Francois carefully arranges things so that the kingpin's own henchmen murder him, as they believe that they are also about to fall victim to the mobster's ruthless schemes. Flashbacks show that Francois had a rewarding, though tumultuous life before his imprisonment. Now he has a new girlfriend, and a new life, in this movie based on a book by Marceau.