Young - beautiful - married, fulfilled, Martha is bored. Passive in an active society, she took a first step by serving as a "guinea pig" to her brother researcher who undertook a comparative study on animal behavior and human behavior.

In 1920, Major Dellaplane, a man of honor and ethics, searches for missing French soldiers. He meets Madame Irène de Courtil, a politically connected Parisian, and their paths cross.

In the 70s, in the Goutte d'or district, three friends of Algerian origin: Poulou, a failed boxer, Amar, the clumsiest of thieves, and Jibé, a public writer for illiterate compatriots whose lives he knows in detail. As he betrays none of their secrets, he enjoys great prestige in the bistros where he works. The three of them lead a casual life, raising money by illicit means. It's only when Poulou and Amar leave that Jibé understands his isolation and marginalization. The images as well as the sounds help to reinforce the feeling that Paris is a city where he is both at home and a terrible stranger.

Félix, operator of dodgem cars in a fairground, becomes obsessed by one of his customers, a mysterious young woman named Lola. Félix soon discovers that Lola is running away from her former boyfriend, a singer who continues to taunt her. Lola asks Félix to prove his love for her by murdering a man he does not know...

Emile Michel, Lapland, orphan, is obliged to bring back within the tribe the ancestral totem: a gold plumb line "borrowed" formerly by his grandfather Raymond Michel. His quest will take him aboard a floating boat that crosses Baffin Bay in the icy waters of Greenland.

A triangle: love, obsession, and choice. Pierre, a ladies' man who has little cash and no fixed residence, describes his best friend Benoît as the world's oldest 32-year-old. The shy, well-employed Benoît's life changes when he answers the personal ad of Marie, a 25-year-old who restores paintings. He's attracted to her and she likes his steady calm and his honest attention. They're soon a couple, and they include Pierre in their dinners, outings, and trips. What will happen when Pierre realizes that he too is in love with Marie?

In Montmartre, Paris, two friends are leading a happy carefree Bohemian existence. Jean-Luc is a cabinetmaker, Mathieu is a sculptor. Then they both meet the love of their lives and decide to get married. Unfortunately, the objects of their desire are not so eager to be drawn into matrimony.

Marc runs a psychotherapy course at a large country house belonging to his wife Colette. His clients are depressed and his job is to cure them of their neuroses.

During the Second World War, Yvon joins the Gestapo to save his Jewish girlfriend, Stella, from deportation. When France is liberated, he has to answer for his past. Hunted, he decides to escape to Spain, but Stella refuses to go with him.

Marion and Jack try to rekindle their relationship with a visit to Paris, home of Marion's parents — and several of her ex-boyfriends.