Sylvain Pons, a musician in a Parisian boulevard orchestra, has a close friend in another musician from that same orchestra, the German pianist Wilhelm Schmucke. They lodge with Mme Cibot, but Pons - unlike Schmucke - has two failings: his passion (which is almost a mania) for collecting works of art, and his passion for good food. Schmucke, on the other hand, has only one passion, and that is his affection for Pons. Pons, being a gourmet, much enjoys dining regularly with his wealthy lawyer cousins M. and Mme Camusot de Marville, for their food is more interesting than Mme Cibot's and full of gastronomic surprises. In an endeavour to remain on good terms with the Camusots, and to repay their favour, he tries to find a bridegroom for their unappealing only child Cecile.