Sixteen-year-old Zoe is lonely and bereft. Her mother is dying of cancer, her father won`t let her visit her mother in the hospital, and no one will talk to her about what she is feeling--no one, that is, except a mysterious man named Simon, who understands everything she is going through. Caught in a romance with Simon, Zoe learns that he is an immortal vampire, resolved on avenging his own mother`s death three centuries before.