At his wedding, Godefroy de Montmirail is interrupted by the news that his bride's father, Duke Fulbert, is gravely ill.

Consulting the wizard Eusebius, Godefory finds out that the corridors of time are somehow being held open and this is killing his future father-in-law.

Back in present day, Jaquouille and Ginete rob a supermarket, and drive to Beatrice for work.

Realising that Jacquouille stole the Duke's treasure and that the remaining items are in the future keeping the corridors of time open, they return, along with Jean-Pierre, and Jacquart.

They create havoc at the wedding, by pouring ice cream into a woman's cleavage, and using a plunger to destroy the police chief's hat.

Some factors contributing to the disappointment of the French audience include the fact that some of the actors had been changed and that the film contained advertisements for various brands.