Les Tuche, a modest french family, change his life after winning a super lottery. Thanks to the money of his parents, the son, Donald (aka "coin-coin") goes to Los Angeles to improve his english. On the L.A. University, he meets Jennifer, daughter of a famous American financier.

Stephanie is ill. Her parents, François and Marguerite, come to visit her. Philippe, her husband, is exhausted from trying to stay strong. Together, they face the impossible: dealing with her illness without tearing each other apart.