When the teenage daughter of a religious family transforms from an A-student into a heroin addict, her parents agree to allow a reality TV crew to stage an intervention and tape her recovery. What they don't know is that she has been taking drugs to deal with the unnatural, evil feelings growing inside her. When she agrees to rehab, with no drugs to suppress what's inside, the demon emerges. Director Seth Grossman refreshes the horror genre with an intense story of a young girl's battle against demonic possession that is guaranteed to haunt audiences for a long time to come.