Marie Madeleine Dreux, Marquise of Brinvilliers, was executed in 1676 for poisoning. Manipulated by her lover and having kept the aftereffects of her childhood, she does not hesitate to poison her father and two brothers to recover their inheritance.

Marie is a young woman recently released from prison on drug charges. As a condition of her release, she joins a theatrical troupe composed of young delinquents, and at the same time faces a difficult journey of reintegration into society and strives to rebuild her life.