Twelve-year-old Cassidy isn't your typical girl. She has an ability far beyond explanation: she can fly. To deal with her unique talent, her parents send her off to a boarding school that is meant for special kids with special abilities like her. But the school isn't at all what Cassidy expected, and neither are the other children there. They act unusual and mysterious, and the more she uncovers the truth behind the school, the more she endangers herself, as the very thing that made her unique might destroy her forever.