According to Jesus' order, Peter and his companions disperse two by two for their first apostolic mission.

A precious work of art from the Italian Renaissance is stolen and passes through many hands before ending up in the shed of the farmhouse of Mr. and Mrs. Dujardin, fishmongers, who are inaugurating their luxury fish shop that very day. But the antique dealers, the free-riders and the bargain-hunters are there. They are jealously careful not to pass on the fruit of their clever investigations to their rivals, for all of them, after a picturesque treasure hunt, know that the Dujardin family own the famous Duranti altarpiece. But where have they hidden it themselves?

Police officer Antoine Delille is in charge of putting an end to the activities of a "kingpin", Jo Pinelli, trafficker, racketeer and pimp. He has three women working for him, including Eva and Jeannette, and is currently "conditioning" a charming, naive Orly employee, with whom he poses as an honorable businessman. Inspector Delille's plan is to arrest Jo for some crime and, while he's being held at the P.J., to delve into his other criminal activities and confound him.

Secret agent FX-18 goes undercover to break up an espionage ring.