Seven old pals live inseparable lives dividing their time between hilarious pranks and memorable drinking bouts. Bénin is the mastermind Broudier the enforcer and Lesueur the prankster. One evening a grandiose plan was hatched: to wreak havoc in two peaceful sub-prefectures: Ambert and Issoire. Broudier begins: in the middle of the night disguised as a minister he wakes up a barracks in Ambert and sets in motion a thunderous maneuver. The next day disguised as a Dominican Bénin climbed to the pulpit of the cathedral and delivered a sermon insulting Christian doctrine. The same day in Issoire the local authorities were preparing to unveil a statue of Vercingetorix. But the statue came to life pelting the crowd with tomatoes: it was Lesueur. With their minds at rest the friends headed off to the Côte-d'Or for a vacation. But already one of them begins to perform a new prank.