Now, taken away from her mother by Social Services and shipped off to a foster home, Faith learns that some nightmares are all too real, that the inventions of her childhood really do haunt the night, hungry for blood. Enter Diana Dormer, a Harvard professor and representative of the Watchers' Council who has come to tell Faith of her destiny, to train her, to prepare her for what is to come: Faith is the Chosen One. She alone will stand against the vampires, the demons, and the forces of darkness.