A big family that like any other one includes relatives that see each other often and others that rarely meet, reunite to celebrate the 50th wedding anniversary of grandma Alba and grandpa Pietro in a big Villa, on the island they moved to. Because of weather conditions they all remain stranded on the island and the idyll between them seems to be over.

Martino's sister, Caterina, can't work anymore for health reasons and he replaces her as cleaner for dr. Guglielmo Gioia, a mental coach. While the doctor leaves, Martino pretends to be his assistant.