Forty-year-old Paul-André is a timid, rather introverted man. Rich but alone, he is deeply bored and ends up concluding that what he needs is a family. Violette, a forty-year-old full of energy, is threatened with eviction and is afraid she'll lose custody of her two children. Paul-André then proposes a totally above the board contract to rent the family in exchange for him paying off Violette's debts. For better and for worse..
A man rescues a mermaid in Paris and slowly falls in love with her.
Everything goes for the best in Fanny's life without stories ... until she discovers that her beloved son, Arthur, nine, is the scapegoat of three boys at his school. Fanny will not leave her son alone in front of these little executioners: she will give these dirty kids the change of their room. Thunderstorms and playground traps, now it will be "an eye for an eye and a tooth for a tooth!"
