Magic flows wondrously through the veins of youthful Natalie. Her mother came from Earthaven, an enchanted world beyond the Thrallstone Gateway, and her father is a Thrall who hawks spells between the worlds. Suspecting her power, Spellmage kidnaps her. But gaining her freedom is only part of her new challenge: Earthaven is under siege and, just as Natalie is learning the power of her magic, she must learn to use it boldly.