Le poissonnier Louis Dujardin inaugure son nouveau magasin. Il fait la connaissance du romancier de série noire César Brandini et de deux faux banquiers suisses mais véritables escrocs, Henri et André, qui cherchent un retable d'une val...
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 ...