Before Mary Van Tassel terrorized the town of Sleepy Hollow with the devilish Headless Horseman, she was Sarah Archer—a young girl trying to survive her witch of a mother. Sarah and her twin are raised in the wild Western Wood, taught the ways of witchcraft, and forced to endure abuse and neglect. But a chance encounter with the hellish Hessian at the moment of his beheading lights a fire in Sarah, giving her the power to overcome those who have wronged her and grow into a fearsome witch.