It has been seven years since Frederic has taken his family away from Paris for a summer vacation. But this year, he is determined to offer them an unforgettable vacation at all costs. But, as usual, his scoundrel boss takes advantage of his kindness and uses financial difficulties as an excuse not to pay him overtime. Without a penny to his name and without telling his wife Fanny, Frederic makes a deal with his friend, Jean-Luc, the director of a luxurious resort in the South of France. The secret agreement between the two men is simple: one day of work for one day at the resort. Frederic will have to handle the most eccentric and unexpected tasks in order to keep the resort running smoothly, and all this, far from Fanny and Max, their five-year-old son, thereby leaving the way clear for Jean-Luc, who has only one idea in mind since the very first day, seducing the woman of his dreams, Fanny.