England 1996. A man travels deep into a dark labyrinthian forest, seeking answers to a series of disappearances from his home town. Experienced in survival and tracking, the man is well equipped for the harshness of the forest but ill prepared for the horrifying hellscape he finds himself trapped inside.

Vietnam veteran Leon Barlow is struggling as a writer, and his personal life isn't much better. His unsympathetic ex-wife Marilyn doesn't approve of his visits with his two children, and he has problems with alcohol. Yet even when Leon manages to catch up on alimony and child support payments, things in his life seem to decline further, until a sudden tragedy catches him off guard.

In the wilderness of British Columbia, two hunters are tracked and viciously murdered by Aaron Hallam. A former Special Operations instructor is approached and asked to apprehend Hallam—his former student—who has 'gone rogue' after suffering severe battle stress from his time in Kosovo.