A murder is committed in the building where Aurélia Maudru, inspector of the judicial police in charge of the investigation, lives.

A Belgian village is struck by repeated flooding, all this because they lack a new sewer. But the Ministry delays in providing the funding needed to build it. To alert public opinion, the villagers decide to do something. This "something" will be a play describing the life of their saint patron. Trouble follows, partly fueled by the short-tempered mayor.

Dishonest smugglers hide their stuff in old Mazier's cafe.

The fortuneteller Rosita and her assistant Raoul are with their caravan on a fair. Earning money is not easy for them because their clumsiness leads to one disaster after the other.