The relationship between a father and daughter is complicated by the arrival of a handsome young man. Lionel, a widower who drives RER trains for a living, has raised his daughter Josephine alone for many years. They have always shared a special bond and live a secure and contented life somewhat isolated from others, in an apartment building in a suburb of Paris. Josephine, an anthropology student, is now grown and become a young woman but remains deeply devoted to her father. Noé is a moody young man living alone with his cat in the same apartment building. He leads a disorganized life and goes abroad often. His sole reason for remaining in the building is Josephine, whom he has feelings for but is temperamentally unable to commit to. Gabrielle, a cab driver and another neighbor, who once had a love affair with Lionel appears to still harbor feelings for him and motherly feelings towards Josephine, but both father and daughter are ambivalent toward anything more than a casual friendship outside their special relationship.