When Charles Le Braque learns that his boss' 17 years old daughter is pregnant, he fears that his 16 years old nice Joel from France, who's spending her vacation with them in Canada, might fall into the same trap. So he and his wife decide to give her the lecture of plants and bees... but it turns out that she's already well informed, gives them a lecture about simultaneous orgasms. She inspires the sexually repressed couple to start experimenting with "modern" forms of sex.
Jean Lefebvre
as Charles Lebrun
Françoise Lemieux
as Martine Lebrun
Andrée Cousineau
as Joëlle
Michel Galabru
as M. Lambris
Darry Cowl
as Le livreur
Marcella Saint-Amant
as Sylvie
Christine Fabréga
as
Michel Audiard
as Le père de Joëlle
Nathalie Courval
as Le professeur de sexologie
Daniel Ceccaldi
as L'ambassadeur
Jean Lajeunesse
as M. Brunet
Réal Béland
as Le jardinier
