When Justine Blanchet, mother of 16-year-olds Capucine and Pierre-Marie, discovers that her husband, Rémi, has been unemployed for six months and they are on the verge of bankruptcy, her "perfect" world crumbles. Unable to cope with this fall from grace, Justine leads Rémi down a dark path to save face. Lacking a plan B, they find themselves in a real mess, so they implement a plan C. C for burglary. But it's not so simple to become a burglar when you don't have the codes or the connections, when vigilant neighbors are keeping a close eye on things, and when the police are investigating with zeal… Drawing unexpected fulfillment from this outlandish and dangerous double life, the Blanchets will realize the absurdity of their former existence and gradually find their way back to happiness.