Cruchadouze and Castaniet are two inseparable friends. One day they decide to leave Arcachon to try the adventure in Bordeaux. After various odd jobs, they come into contact with Betty Florent, the banker's wife. This one has just been contacted by a former accomplice who blackmails him by offering him an insurance scam. A big bonus on the head of a simpleton. Cruchadouze was passing by.