After witnessing and accidentally helping several thugs get away with a heist, the women rooming together notice through their telescope that the stolen loot is in the apartment right across the street. They plan their own burglary of the already stolen loot.

Georges Lajoie is a Parisian café owner. As every summer, Georges, his wife Ginette and grown-up son Léon go on holiday to Loulou's campsite, where they meet up with the Schumacher family (whose father is a bailiff) and the Colin family (who sells bras in the markets). This year, their peace is slightly disturbed by the proximity of a construction site where foreign workers are employed. Xenophobic comments are made. One evening at the ball, a fight breaks out between Lajoie, Albert Schumacher and two algerian immigrant workers...