Dr. David Marrow invites three distinct individuals to the eerie and isolated Hill House to be subjects for a sleep disorder study. The unfortunate guests discover that Marrow is far more interested in the sinister mansion itself — and they soon see the true nature of its horror. Dr Marrow enlists Theo, Luke and Nell for a study of sleep disorders at the Hill House. As soon as the terrifying truth about the mansion is revealed, everyone is found fighting for their lives.