Alice is a promising young artist in Paris. Her boyfriend Franck, a boxer, has just moved in to her attic flat. Then her sister Elsa, a bored housewife, leaves her unfaithful husband Thomas and turns up unannounced to stay with Alice and Franck. Elsa disrupts their life by playing psychological games with them, but they cannot bring themselves to throw her out.

One afternoon in Saint-Germain-des-Prés, 18-year-old Philippe meets 16-year-old Frédéric. Their eyes meet, they talk and decide to spend a sensemble weekend in Deauville. But it's not that easy to get to know each other. From surprises to concessions, this weekend teaches them how difficult it is to understand each other and not waste the pleasures that come our way; and that sometimes, at the end of the day, we'd like to do the trip all over again, in reverse.

Frédéric is arrested for illicit use of narcotic drugs. In jail, he meets he get up close with various sorts of people among which he looks for a role model as a 18-year-old boy.

Who would have expected Brigitte to marry a prisoner with a long sentence in the first place? In this romantic action movie, that is only the first in a long line of surprising actions by the young woman. Somehow, she manages to get hooked to the young prisoner before realizing that he'll be locked up for another three or four decades. She decides that this is much too long to wait to spend time with her sweetheart and decides to learn how to fly a helicopter. Why? So she can fly in and take him out of his prison yard, which is exactly what she does, thrilling romantics all over France and seriously upsetting the authorities. This award-winning film is based on a true incident from 1986.