A shy bank employee unexpectedly invites a young woman to a café, leading to a one-night stand. When he shares this with his disillusioned friend, the writer helps him navigate a dazzling social ascent.

Jean-Louis Trintignant
as Nicolas Mallet

Jean-Pierre Cassel
as Claude Fabre

Romy Schneider
as Roberte Groult

Jane Birkin
as Marie-Paule Allard

Jean-François Balmer
as Vischenko

Florinda Bolkan
as Flora Danieli

Mary Marquet
as Tania Hermens

Dominique Constanza
as Sabine

Gisèle Casadesus
as Mrs. Lourceuil

Georges Wilson
as Julien Lourceuil