The story of the rise of Alexander Stravisky, a brilliant and seductive crook, in Paris of the roaring twenties. But unchecked greed and corruption does not go unpunished. The political decadence he feeds off will also cause his downfall.

Marianne Riblon runs a small construction business in the south of France. Widowed and estranged from a daughter she hasn't seen in 15 years, she spends her time and working and has a life devoid of affection. An active member of the town council, she has strong conservative and racist convictions. One day, her daughter Charlotte calls her to tell her she's a grandmother. Her grandson, Nicolas, is 12 and is on his way to come see her. Charlotte wants her to take care of the child while she's being treated for leukemia. A the station, Marianne discovers the boy is half-black. The two learn to know each other...