Brad, Christina, T.K. and Kelly are on a post-graduation trip to Europe. Unfortunately, what starts out as a dream quickly spirals into a nightmare. Upon entering a 14th century castle, the friends find themselves trapped in a horrifying alternate realm where violent hallucinations overtake them. A stranger emerges, shocking them with the reality of their terrifying fate; one must stay behind - alone forever within the torturous stone walls, in order for the rest of the group to escape. As time ...