A student is devastated when he finds that his girlfriend is cheating on him. In order to find out why she did it, he decides to spy on her and her airline pilot lover. Then he sees the pilot with a blonde woman and he begins to follow them…

Laure is a 40-year-old psychologist who doesn't know her son, Jean. But the latter comes back to Paris and finds a brand new woman when he sees his mother.

On a leave from the army, Cri-Cri gets with his friends and stumbles upon a hamlet of beautiful girls.

In the fall of 1963, Anne is becoming a teenager. She lives in Paris with her mother and her older sister, Frédérique. They're just back from summer at the beach with their father. School starts. A turbulent year awaits them both.