A worried father (Tony Denham, The Football Factory) goes to the isolated forest of Greenwood in hope of finding his son Pat Cullen (Mark Hutchinson, The Pigman Murders) who has been missing for over two years. As he makes his way to the last destination he encounters dark twists and turns as he must now try to survive the forest himself.

12 strangers are held against their will as each of them must go along with the rules if they are to get the cure for a killer virus which infects them all.