Philippe is an older man and an industrialist whose wife is confined to her bed. They have no children. As he is preparing to go on a vacation to the seaside, he strikes up an acquaintance with Paul, a young working-class boy, and decides to bring him along. This is Paul's first glimpse of how the other half lives, with their first-class hotels and so on. When he meets some aristocratic young people at the resort, he tries to put over the fiction that he is of their class, with poor success.

The exploits of Chief Police Inspector Chabrier, first before the invasion of France in May 1940 as he fights against spies preparing the coming the Germans, particularly Emmy de Welder, the alleged manager of the Rouen hospital. Later, Chabrier and his men go underground and resist the occupiers whatever the price to pay. When the Liberation comes Chabrier resumes his activities at the French National Police.

Philippe Clarence, a famous Parisian dressmaker, seduces his friend's fiancee. But, for the first time in his life, this is for real. The film is also a sharp picture of the fashion world.

Sigrid and Yann are cousins, and in love with each other. A medical student, Jean marries Léna, who gives him a child, but he dies accidentally. Desperate, Yann finds Sigrid in their childhood home in Savoy. Afraid of seeing their passion revive, he decides to leave with Léna for Africa.