Within

Four American friends traveling in the Czech Republic discover a mysterious map that leads them to a secluded, ancient castle. Their adventure turns into a nightmare when they become trapped inside, unable to find an exit. They are subjected to horrifying hallucinations that exploit their deepest fears. A deranged man reveals the castle's curse: to escape, they must choose one person to leave behind forever. Their friendships shatter as they descend into paranoia and betrayal.