Within plot
While traveling through the Czech Republic, American friends Brad, Christina, TK and Kelly find a map with a route to an old castle and decide to visit the place. They force the entrance to the castle and after a while they realize they are locked up without any exit. In addition, they suffer from painful hallucinations. When they meet the strange Travis, the stranger explains that they are in hell and one of them must stay behind to let the rest of the group escape. As they decide who will be the chosen one, the true nature of each is revealed.