After moving to a new city, a young French teenage girl falls in love with a boy and thinks of having sex with him, since her girl friends have already done it.

Claude Brasseur
as François Beretton

Brigitte Fossey
as Françoise Beretton

Sophie Marceau
as Victoire Beretton, known as “Vic”

Denise Grey
as Poupette, François' grandmother, Vic's great-grandmother

Pierre Cosso
as Philippe Berthier

Lambert Wilson
as Félix Maréchal

Alexandre Sterling
as Mathieu

Sheila O'Connor
as Pénélope Fontanet

Alexandra Gonin
as Samantha Fontanet, Penelope's younger sister

Daniel Russo
as Étienne, François' dentist friend