Five strangers awake in an abandoned two-story house with a few unanswered questions racing through their minds. Who are they? Where are they? Why are they there? They soon discover that the obvious answers are not always the right ones. With nerves stretched thin, and time closing in, those remaining realize that if they want to escape from the forsaken place, they will have to work together to solve the puzzle, taking them on a psychological maze of murder and mayhem that is… PURGATORIUM.