NIne years ago, Amin came from Senegal to work in France, leaving his wife Aisha and their three children behind. In France, there is nothing but work for him, no friends but the people he lives with at his workers' home.

Lucie, a police officer, is fond of her new neighbors, a young couple. Soon she discovers that Yann, the father, has a heavy criminal record. Lucie has a moral conflict between her professionalism and her desire to help this family.