The countess and her son, irresponsible but sweet viscount Louis, own the castle Montverdier, which is falling apart. Fernand Castanier is the baker in the neighboring town Mussy-sur-Ploute.

Two insomniacs go into partnership to start a club bringing together people who suffer from the same trouble and decide together to become vigilantes and more precisely vindicators serving causes they are interested in. But relations between the various members will go on deteriorating.

Michel, a referee has to suffer the consequences of having whistled a penalty against a team which is supported by football hooligans.

Faking an injury for insurance money, a peddler seeks out a cure to support his claims while a suspicious investigator tries to expose the scam.