To amuse themselves at a weekly dinner, a few well-heeled folk each bring a dimwit along who is to talk about his pastime. Each member seeks to introduce a champion dumbbell. Pierre, an avid participant of the game, runs into one problem after another that devilishly compromises his secrets, turning the tables on him and his objective, which diverges as the movie progresses. Firstly, wishing to be certain he has selected a winner, he invited his guest, Mr. Pignon, to meet him at home before setting off; but night of all nights, Pierre has put his back out and it is questionable whether he can manage to get to the dinner. The blundering Mr. Pignon will continually spring forward to help relieve Pierre of his troubles, which have drastically compounded, pointing in the direction of friends, taxes and women, and Pierre's dimwit Pignon accordingly will prove his substance to the end.