On Theona Dawes' ninth birthday she is raped, brutally assaulted, and left to burn in a fire that kills her mother. Somehow she survives.
Twenty-five years later, after enduring an unstable childhood bouncing from one foster home to another, Theo emerges as a gifted artist and successful, but unhappy businesswoman. She seeks the help of a psychiatrist, Dr. Jeffrey Ross, to try and understand her deepening depression and why she experiences frequent blackouts, some lasting for days.
Through therapy, Theo begins retrieving lost time and soon discovers another side of her personality, called Sarah, who for years has been stalking and plotting revenge against her abuser.
An attraction to her therapist, however, further complicates Theo's life and her ability to heal. Sarah, ever Theo's protector, takes matters into her own hands, but as Theo's terrible repressed memories are fully unveiled and the painful truth is revealed, a dangerous chain of events is set in motion.