Sarah, a high school student, is at her lowest point when she runs away from home and finds herself with no one to rely on and suffering from frequent nightmares. She stumbles across a university sleep study that promises both safety and money, as well as an unexpected companion and confide in the supervisory scientist Jeremy. But there's something odd about the proceedings, and being watched appears to aggravate Sarah's disturbing dreams. As the darkness closes in, it becomes evident that Sarah has unintentionally become the conduit for a terrifying new revelation...