Martine is a lonely girl in an exclusive boarding school who conjures up a glamorous existence in order to make her dull life tolerable and to impress the other girls. One of her flights of fancy is a love affair with Brevannes, a famous composer. She leaves the school and goes to the French Alps to find the life she's only dreamed about, where she meets Brevannes and a December-May romance develops until she meets a young mountain guide, Henri Vidal.

Dany Robin
Martine

Claude Dauphin
Jacques Brévannes

Lucien Baroux
Baron Saint-Yves

Marguerite Moreno
Madame de Stakelberg

Henri Vidal
Pierre
Jacqueline Cadet
Madeleine Catinat

Robert Pizani
Consul Alvaro Gomez

Pierre Dudan
High mountain guide
Fritzi Scheff
Laure Alex
Boarder
Rose Avril
(voice)
Nita Berger
(voice)

Camille Bert
Music teacher
Gisèle Brucker
Boarder
Alain Clairfond