This is a feature motion picture that consists of three tales based on particular patients of a mental institution. Each tale begins with Dr. Stenson, the primary physician at the Sanitarium, commenting on the recent arrival of a new patient. As Dr. Stenson speaks, the individual's story begins. "Sanitarium" explores the different narratives of the insane patients - tales which led to their crazed states of minds. These accounts reflect hallucinations, imaginary voices, and altered realities, and include themes of the paranormal, the unexplainable, and the mystical. The motion picture features thrillers, dramas, horror, and mystery.