Detective Mark Lewis (Frank Grillo) and psychologist Dr. Elizabeth Klein (Maria Bello) are called to investigate the horrific massacre of three college students, brutally murdered inside an abandoned home. The students were amateur ghost-hunters seeking out paranormal phenomenon at the abandoned house, which was believed to be haunted. What began as youthful curiosity turned into something truly terrifying, and now Lewis and Klein are forced to explore the supernatural in order to solve the murders and find two missing students.