Max has been a caterer for 30 years, has organized hundreds of parties and he is about to retire. Today, it is a sublime wedding in a 17th century castle, one more, the one of Pierre and Héléna. As usual, Max coordinated everything: he recruited his brigade of waiters, cooks, divers, he advised a photographer, reserved the orchestra, arranged the floral decoration, in short all the ingredients are there to make this party a success... But the law of series will upset a schedule down to the wire where every moment of happiness and emotion risks turning into a disaster or chaos. From the preparations until dawn, we will experience the backstage of this evening through the eyes of those who work and who will have to rely on their only common ground: the meaning of celebration.