Gérard Lanvin has an important role in a new blockbuster! Filming is about to begin in the South of France. On site, he meets Momo Zapareto, the pool boy at the house he is renting for the duration or the shoot. But Momo is a fan, a big fan… an uberfan! He has seen all his films and is soon doing all he can to make himself indispensable to his idol and the technical crew. For Gérard, the nightmare has just begun…

At a campsite, two couples with complete opposites become mobile home neighbors. Between tensions and shenanigans, their cohabitation turns into a war of nerves.