Overwhelmed by the lack of money, Loïc and his family live with his father in a small, run-down house. But when he wins the super jackpot, he moves with his family to Beau-Rivage and intends to take charge of a major watch brand, Montrex.
As Jean-Hubert tries to convince him to buy Givart, Loïc is pursued by Vlad, who threatens him, and by Coutric, who wants to force him to put an end to his mindless spending. Meanwhile, Maël, Tina and Loane try to adapt to their new life.
The "Week-End Grands Gagnants du Loto" is very timely for Loane: this is the perfect opportunity to fall in love with Loïc. For Loïc, it's the perfect opportunity to invest in a pension fund created from scratch by Jean-Hubert.
Loïc and Jean-Hubert want to take advantage of the baptism of Jean-Hubert's nephew to start a rumor and lead people to believe that they are going to sell Givart, luring the Montrex family into a trap.
Jean-Hubert's strategy comes up against a drastic clause: only members of the Montrex family can acquire stakes in the company. Loïc thus delves into his origins, but it turns out that Loane is the true descendant of Montrex.
