Elise and William run a small, unpretentious restaurant. Exceptionally, this weekend, they have a little romantic fun. Two days in a palace in Cannes. Annabelle and Thierry are "peoples": she is a weather presenter, he is an ex-footballer. This weekend, as often, they have a little romantic fun. Two days in a palace... in Cannes. In the train, Elise and William find themselves by chance in front of Annabelle and Thierry. The peoples are recognized by the couple of "cannonballs". So begins a crazy weekend.