In France during World War I, Marthe waits for her husband, Jacques, while he fights on the front lines. Marthe then begins a tempestuous affair with 17-year-old François, with whom she had a dalliance before marrying Jacques. Jealous François struggles with the fact that Marthe is married, while she tries to prove her devotion to her young, hotheaded lover. Things become even more complex when Marthe becomes pregnant with Jacques' baby.

An Italian gentleman and a doctor's wife plot to break up their spouses' tryst in Paris.

Charles is a student in Strasbourg. Abandoned by Liliane, his fiancée, who has inexplicably given up on marriage, he moves to Paris, where he decides to pursue a career in cinema. He founded a film club and became a journalist, then assistant to a famous director. Little by little, he came face to face with the various compromises inherent in this professional milieu. After writing a screenplay about his experiences, he enlists the help of Chantal, a young actress, to bring his film project to fruition.

A thirteen-year-old French girl deals with moving to a new city and school in Paris, while at the same time her parents are getting a divorce.