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.