Lucy Hull, a young children's librarian in Hannibal, Missouri, finds herself both kidnapper and kidnapped when her favourite patron, ten-year-old Ian Drake, runs away from home. The precocious Ian is addicted to reading, but needs Lucy's help to smuggle books past his overbearing mother, who has enrolled Ian in weekly anti-gay classes. When Lucy finds Ian camped out in the library after hours with a backpack of provisions and an escape plan, she allows herself to be hijacked by him and the pair embark on a spontaneous road trip. But is it just Ian who is running away? And should Lucy really be trying to save a boy from his own parents?