While the Sexists rule the roost in Sainte-Foy, Huguette and her gang take advantage of their children's departure to summer camp to try to reestablish good neighborly relations.

To prove that she has become a docile and harmless housewife again, Huguette participates in a beauty contest organized by the mayor of Sainte-Foy.

After facing a thousand dangers, Huguette and her clan celebrate Serge's birthday. During a midnight bath, their last, they will realize that love is a mystery as beautiful as it is dangerous.