For Pirre Brochant (Thierry Lhermitte) and his friends, Wednesday is the day for idiots. The principle is simple: each person has to bring along an idiot. The one who brings the most spectacular idiot wins the prize. Tonight, Bronchant is ecstatic. He has found a gem. The ultimate idiot. ”A world champion idiot!”, Francois Pignon (Jacques Villeret), a lowly accountant at the finance ministry, a man devoted to his construction of models made of matchsticks. What Bronchant doesn’t know is that Pignon is a real jinx, a past master in the art of bringing on catastrophes...