It's the end of the school year. The long-awaited moment of the holidays is arrive. The little Nicolas, her parents and Grandma take the road towards the sea, and settle in for some time at the Hotel Beau-Rivage.

Since the time that he had dreamed about it, Maximilien, is about to get his silver piercing.

In a colour musical, a monster comes from an old Hollywood movie and attacks a small town by transforming its inhabitants into zombies. To save the world, a couple and a scientist are going to have to change the kind of the movie.