When Sophie Hatter is cursed by the Witch of the Waste and turned into an old woman, she leaves behind her quiet life and heads for the mysterious moving castle that looms above Market Chipping. Inside lives the infamous Wizard Howl, rumored to devour the souls of young girls. But Sophie soon discovers there’s far more to Howl—and the castle—than anyone suspects. With the help of a fiery demon named Calcifer and an apprentice named Michael, Sophie sets out to break her curse, untangle a web of magic, and find her own hidden power.