Everyone knows what happens when magic-workers come; they harvest human hearts. Foss, plain, clumsy and practical as a boot, never expected anyone would want hers. When a sorcerer accidentally snags a piece of her heart, she stomps to his enchanted house to demand he fixes it, but he's petulant and clueless. As Foss searches for a cure, she uncovers far more about the heart-taking than she imagined..