Jean lives with his little brother Paul, his dad and Yvette, the nanny. He is a typical young boy who just wants to play with his best friends and watch TV. One thing is missing though. Where is Mommy? She left when Jean was younger and no one ever talks about her. Until one day, he gets a postcard from Mommy. Michèle, the neighbor girl, has to read it to him – he’s only six after all ! It seems that Mommy is in America and she met Buffalo Bill !