Paul has everything to be happy: a great job, a devoted wife, a lovely daughter and an amazing villa. It's a Sunday in the middle of the summer, he wants to relax by his pool, watch the tennis game on TV. But Paul feels oppressed by an invisible evil that devours him...

Ducoboo is a very inventive dunce and joker, he is very resourceful at finding new ways to copy from his neighbor, to cheat or to defy the teacher's authority.