Thomas, exposed once to Majken's blood during her fight with John to save his life, is becoming vampyric. Soon the symptoms are so bad he is unable to deny he is changing. As his naïve but brilliant sister Kimberly unearths what happened to him in Trenton, Jeanine, a young vampyric girl across the country, flees with the seven-year-old daughter of a blood cult leader to save her life; Nolan wishes to sacrifice his own daughter. Yet dangers abide in the darkness where Thomas is unaware. Once Thomas is entrapped with Jeanine and Alecia, Majken must pursue him into darkness itself to save him from the deadly blood cult leader.