Alors voilà

Constantin has three sons. Three sons, three families and their children. The first son is a trucker, the second an accountant and the third an ex-plumber who was in hospital after attempting suicide. The three families team up under the leadership of the accountant to buy Henri (the trucker) his own truck, something he's dreamed about for years. Constantin, stern patriarch, joker, a great lover of life, keeps his brood under constant surveillance. The three families live in three consecutive flats in the same building. Constantin himself lives in an old railway car transformed into an extravagant den. He makes a living from mysterious jobs, surrounded by a band of phantom associates. His grandchildren are his accomplices.