One night in provincial France, Marc meets Sylvie after missing his train back to Paris. Instantly and intensely drawn to one another, they wander through the streets until morning in rare, almost choreographed harmony. A thwarted plan for a second meeting sends each in a separate direction: Sylvie reunites with her ex and leaves France; Marc falls in love and marries.

Elisabeth is very protective of her teenage brother Paul, who has been injured in a snowball fight at school and has to rest in bed most of the time. The siblings are inseparable, living in the same room, fighting, playing secret games, and rarely leaving the house. Paul's friend, Gerard, often drops by to stay with them. One day Elisabeth brings home Agathe to live with them. She bears a strong resemblance to Dargelos, a schoolboy whom Paul had a...