The rivalry between Albert Gambier, head of the municipal brass band, and the jazz band, led by Jacques Hélian, provokes many comic adventures in this small provincial town. Everything will end in songs, thanks to the love uniting Jimmy, the band's composer, and Nicole, Gambier's daughter.
Life could be so sweet for Gus Vermeulen and Achille Mironval. They are partners in a cheese trade and business is good. So what they plan to do is to marry their two children so as to perpetuate this blissful situation. However two annoying facts cast a shadow over their happiness. Jean-Pierre Mironval, Achille's son, won't hear of anything connected with cheese and would rather be a jazz band leader and Gus, with his passion for spiritism, sows the seeds of discord between the two men. But all is well that ends well.
