Paul-André (Benoît Poelvoorde) is a shy and rather reserved man. Wealthy but alone, profoundly bored, he arrives to the conclusion he needs a family. Violette (Virginie Efira), a young woman full of life, is threatened with eviction and is afraid of loosing the custody of her children. Paul-André offers her to rent her family, all good and honour, in exchange for her debts repayments, in order for him to taste, as a trial, the joys of family life! For better and for worse.