A doctor unleashes a powerful force of darkness while attempting to prove that schizophrenia is supernatural in origin. Convinced that the hallucinations being experienced by her schizophrenic patients offer proof of the paranormal, Dr. Helen Jara stages an unapproved psychological study designed to prove her controversial hypothesis. Though the experiment is a success, Dr. Jara and two other professionals quickly perished under sinister circumstances. Years later, investigators probing the case discover a series of disturbing audio recordings that were never officially documented. Intrigued, they invite one of the doctor's patients to continue the study. Meanwhile, malevolent powers start to stir once again.