Grace returns to the small town she grew up in to find the brother, David, is missing. Deciding that she must reunite her family, she follows a lead which takes her deep into the wilderness. Lost, injured and alone, soon her only hope is another hiker who is communicating with her via her radio. Grace makes her way closer to this mysterious hiker – however, suspicions start to grow about their true identity. As the darkness grows ever more menacing and a threatening presence begins to consume Grace, who can she really trust?