Valmont

In 18th century France, the Marquise de Merteuil, a wealthy widow, learns that her secret lover Gercourt will marry Cécile de Volanges, a 15-year-old who was raised in a convent to ensure her chastity. It is rumored that Gercourt cannot easily break off relations with his "former" mistress who is mentally unbalanced. Angered over the hypocrisy of Gercourt's insistence on a virgin bride while keeping a lover of his own, his concealment of the upcoming marriage, and his slight of her character, Merteuil plans revenge.