It's the end of the school year. The long-awaited moment of summer vacation has arrived. Little Nicolas, his parents, and Grandma head to Hotel Beau-Rivage by the seaside.
Antoine receives a novel gift for his fiftieth birthday: a heart attack. From now on, he "must be careful." But Antoine has spent his entire life being careful: being careful about his health, about what he eats, about his family, about accepting his friends' foibles, and about putting up with a whole heap of trouble...