In 1942, in an occupied Paris, the apolitical grocer Edmond Batignole lives with his wife and daughter in a small apartment in the building of his grocery. When his future son-in-law and collaborator of the German Pierre-Jean Lamour calls the Nazis to arrest the Jewish Bernstein family, they move to the confiscated apartment. Some days later, the young Simon Bernstein escapes from the Germans and comes to his former home. When Batignole finds him, he feels sorry for the boy and lodges him, hiding Simon from Pierre-Jean and also from his wife. Later, two cousins of Simon meet him in the cellar of the grocery. When Pierre-Jean finds the children, Batignole decides to travel with the children to Switzerland.

In 1942, in an occupied Paris, the apolitical grocer Edmond Batignole lives with his wife and daughter in a small apartment in the building of his grocery. When his future son-in-law and collaborator of the German Pierre-Jean Lamour calls the Nazis to arrest the Jewish Bernstein family, they move to the confiscated apartment. Some days later, the young Simon Bernstein escapes from the Germans and comes to his former home. When Batignole finds him, he feels sorry for the boy and lodges him, hiding Simon from Pierre-Jean and also from his wife. Later, two cousins of Simon meet him in the cellar of the grocery. When Pierre-Jean finds the children, Batignole decides to travel with the children to Switzerland.

一次偶然中，克里斯汀（杰拉尔·朱诺 Gérard Jugnot 饰）遇见了正打算跳河自杀的流浪汉布杜（杰拉尔·德帕迪约 Gérard Depardieu 饰），善良的克里斯汀救起了布杜，并将他带回自己家中休养。很快，布杜就恢复了活力，然而，他却并没有半点想要离开的意思，竟然就这样死皮赖脸的在这个家里住了下去。
克里斯汀的妻子伊索（凯瑟琳·弗洛 Catherine Frot 饰）是一名抑郁症患者，布杜大大咧咧不拘小节的性格和行为举止让她大卫抓狂。与此同时，伊索和克里斯汀的感情也走到了尽头，他们对待彼此非常的冷淡，并且双双在外面有别的情人。布杜的横插一脚改变了这个家庭糟糕的氛围，在和布杜的相处过程中，克里斯汀和伊索都开始对她们自己的所作所为进行反思。