en Cuevana 3. Prosper, the accountant of a fashion house, takes a vacation to Monte Carlo without his wife Sabine. And if he goes alone it is for a very good reason: he has a rendezvous with Olga, a beautiful woman. Once in Monte Carlo, he wins a large sum of money at the casino. Unfortunately for him he immediately becomes the prey of three gangsters who proceed to relieve him of his newly acquired fortune.