The unhappily married woman struggles to break free from social pressures and her boring suburban setting.

In the Landes region of France, near Bordeaux, marriages are arranged to merge land parcels and unite neighbouring families. Thus, young Thérèse Larroque becomes Mrs. Desqueyroux. But her avant-garde ideas clash with local conventions and in order to break free from the fate imposed upon her and live a full life, she will resort to tragically extreme measures.