Marguerite Mercier is a retired seamstress who lives in an old apartment.A real estate agent has come to her apartment looking for Mr. Alphonse Caron, the companion of Marguerite who died some years again.Marguerite has made up a lot of excuses.But Leon , the cabinetmaker of the neighborhood says Marguerite that she must find a fake husband.So Marguerite proposes Leon to be her fake husband.The real estate agent comes again and Leon transformed in Alphonse asks him to go away.In a park Marguerite and Leon meet a boy Sebastien ,who falls from a skate roller and his little sister Stéphanie.They go to the hospital with them.There Marguerite knows Véronique , the mother of the children