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.

Fates of multiple otherwise disconnected characters intertwine miraculously under the sky of Paris. And it all happens in one day.

Irène is the unhappy wife of a wealthy publisher, Jacques Voisin-Larive, who cares about her no more than a beautiful piece of furniture. Her meeting with Étienne, a young cabinetmaker with whom she falls in love, turns her dismal existence upside down. Not wanting to reveal her condition to her lover, she pretends to be a modest maid, employed by the Voisin-Larive. At the end of a weekend spent with her lover, Irène discovers that she is pregnant. The fragile balance of their existence is suddenly broken. Taking the initiative, she reveals her affair to Jacques and tells him about her desire to divorce. But her husband has no intention of giving her back her freedom...

Adolphe is in serious financial difficulties and the extravagances of his wife do not help to fix things.

A sensitive teen-age boy survives the brutalities of a country training school.

In the far away African country of Tagabombo a millionaire adventurer has died. His ex-wife and a private detective are more than interested in his money.