Alphonse's top client Adèle has a troublesome grandson who's after her money by hook or by crook. Alphonse and his father lock horns over management of the business when it becomes apparent Alphonse is a prodigy. Margot begins an affair with the couple's lesbian mortgage advisor. Alphonse's long-lost mother, recently widowed in Italy, takes a trip back to Paris.

Vengeful and greedy, Adèle's grandson hires deadbeat private detective Wilfried to track down his grandmother's wealth. Newly enriched, Alphonse wants to treat his wife to the lavish life they always dreamed of, but Jacques feels the money is rightfully his and makes off with it. We learn Alphonse's mother was forced to abandon the family under duress.