Seventeen-year-old sorcerer Tobias Corvin tumbles through a blizzard and arrives - half frozen and half dead - in another world. Our world. Trapped in Boston, he tries to blend in at an old boarding school while secretly plotting to save his home. But if anything can distract him from his mission, it's the wild-haired and intriguing Fiona. She is determined to learn the dangerous truths about his magic. When a spectral army from Tobias's world begins slaughtering Bostonians, he and Fiona must stop the carnage.