A few years ago, Isabelle Leritz, a famous pianist, suffered a fit of madness, in the middle of a concert. Now recovered, she fell in love with Jacques whom she plans to marry. She does not know that he is having an affair with Caroline, his sister, director of a fashion house.

Felix is a middle-aged bourgeois husband. Much to his discomfort, he learns that his wife Gabrielle is carrying on with a young man--a very young man. Rather than express outrage, Felix decides that there's something lacking in him. He spends the rest of the picture trying to keep his wife by altering his own personality and outlook.

Piedalu is an ordinary villager, who comes to the capital to present his financial plan to the Minister of Renovation, and finds it difficult to find someone to listen to him. He meets an actress in Paris, whom he takes for a girl from his country.

In order to please Martineau, a wealthy industrialist, cynical Gabory accepts to organize a rigged beauty contest whose winner will be Françoise, Martineau's young mistress. However, there are other comely contestants among whom Christiane, the daughter of a general, Jackie, an unemployed actress, Colette, the daughter of a distiller and Marie, a secretary engaged to serious-minded construction foreman Robert. So, will things turn out exactly the way Martineau and Gabory want them...?