After bickering with a Muggle-born, Bellatrix loses her temper and instinctively uses the Cruciatus Curse at Hogwarts. Expelled, facing permanent seizure of her wand, Bellatrix is saved by a bargain manipulated by Voldemort, who wants to forge this cruel child into a soldier. As his ward, under house arrest at Malfoy Manor, Bellatrix becomes more than she could have ever imagined.