Ah! How good it is with us

Life could be so sweet for Gus Vermeulen and Achille Mironval. They are partners in a cheese trade, and the business is thriving. They hatch a plan to wed their two children to perpetuate this blissful state. However two nagging facts cast a shadow over their happiness: Achille's son, Jean-Pierre Mironval, won't hear of anything connected with cheese and would rather be a jazz band leader; and Gus, with his devotion to spiritism, sows the seeds of discord between the two men. But all's well that ends well.