Renée Le Roux runs the historic Nice casino with an iron fist, the object of all desire. In the midst of the green carpet war, she stands alone against the mafia and refuses to give in to the intimidation of her main competitor, Jean-Dominique Fratoni. But at the heart of this fight, his daughter, Agnès, pushed by her lover, the sulphurous lawyer Maurice Agnelet, sells her shares in the family casino to Jean-Dominique Fratoni. A few months later, she mysteriously disappears. A forty-year fight begins until the truth about his disappearance comes to light!