A young man is hit by a car on a zebra crossing. The pretty driver drives him home, takes care of him and falls in love with him. She has a fat, selfish, boorish husband whom she abandons to her imaginary illnesses to marry her nice wounded man.

An assistant pharmacist in the South of France , Blaise works for Mrs. Pinède, a well-endowed hot-blooded woman who has developed a crush on him, and her husband ... who hasn't! One day, Blaise meets Felloux, a rich man who is convalescing in Cassis. Felloux takes a liking to Blaise and decides to offer him a perfect day in Juan-les-Pins. Gambling in the casino, Blaise wins an astronomical sum. A new life seems to open to him but not for long. Indeed he loses all, but not before he has given a beautiful necklace to a young woman.