Vincent And Gregoire have just won a lot a money. The latter wants the whole pile and flies away to Turkey where he meets a compatriot, Appoline, and her boss Samos.
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?
Madame Andromèze's diamond bracelet has been stolen from the plane taking Nicole from Rome to Paris. Slipped by the thief into her bag, the bracelet undergoes many vicissitudes... Found and appraised, it is declared a fake! Nicole's brother and fiancé chase after the real bracelet, disrupting the life of a grand palace. Finally, Madame Andromèze finds her bracelet, which has been declared genuine. The original thief resurfaces and steals the jewel again.