Past 50 and unemployed for two years, formerly an acquisitions-and-mergers specialist, Maxime has been freeloading at his sister's for six months. Her boss Claire, a sexist, has a brilliant ten-year-old son, Jérémy, for whom Maxime is roped into being a full-time male nanny. And this is just the beginning of a progressive nightmare. But Jérémy has an idea...

The attractive Béatrice Laune has a brilliant career, recently crowned with the award for best advertising creativity of the year. A well-deserved reward, as Béatrice has devoted her entire life to her work. The only fly in the ointment is that, for some time now, the young woman has been fainting every time she is confronted with a baby! The medical diagnosis attributes these episodes to a repressed desire to have a child as she approaches her 40th birthday. This situation disturbs Béatrice to the point where she becomes fixated on one idea: having a baby for her 40th birthday!

Juliette is attending the baptism of Lucas, the son of her best friend Claire. But the young mother, weakened by her childbirth, shows disturbing signs of depression.

The small town of Los Angeles abounds with treasures that the entire of France envies her : Its carwash, banks, supermarket and even its pear vendor. Nevertheless, despite these admirable modesties, the small town's charm and character unravels due to a lack of tenderness.

Fascinated by the dazzling small screen, Bernard leaves home sweet home, daddy and mummy and his native city (Toulouse) to try his luck in Paris.