After 10 years separation from his wife, a film director (Jean-Louis Trintignant), imagines he can make up with her by giving her a part in his next film, an adaptation of Tshekov's "Three Sisters". He goes location scouting and stays in Bex, a Spa near Lake Leman, together with the three actresses : Julie, his ex-wife (Delphine Seyrig), the mysterious Cecilia, that his producer wants him to take (Lea Massari), and Esther (Valérie Mairesse), a teenager. They all stay in an old decaying hotel. In this isolated mansion the four of them will fight but also discover each other.

Arthur and Marcel, two firemen, keep boredom at bay by improvising on stage, one on a keyboard the other on drums, tunes, poems and songs. Carol arrives, in search of her lover Armand. Accompanied by the musicians, she sings of her strange loves.

Interspersed with jokes, visual puns, and philosophical discussions, the story follows the attempts of a girl who has spent the last year living outside her native Switzerland to rekindle a former love affair. When her immature young friend fails to demonstrate the requisite interest, she takes up with someone the boy disapproves of. When the boy kicks the man, the man leaves both the boy and his erstwhile ex-girlfriend to their own devices.

Two guys facing problems in relationships and wondering about the living on the capitalist society.