Maine game warden Mike Bowditch has been sent into exile, transferred by his superiors to a remote outpost on the Canadian border. When a blizzard descends on the coast, Bowditch is called to the rustic cabin of a terrified couple. A raving and half-frozen man has appeared at their door, claiming his friend is lost in the storm. But what starts as a rescue mission in the wilderness soon becomes a baffling murder investigation. The dead man is a notorious drug dealer, and state police detectives suspect it was his own friend who killed him. Bowditch isn't so sure, but his vow not to interfere in the case is tested when he finds himself powerfully attracted to a beautiful woman with a dark past and a troubled young son. The boy seems to know something about what really happened in the blizzard, but he is keeping his secrets locked in a cryptic notebook, and Mike fears for the safety of the strange child. Meanwhile, an anonymous tormentor has decided to make the new warden's life a living hell. Alone and outgunned, Bowditch turns for assistance to his old friend, the legendary bush pilot Charley Stevens. But in this snowbound landscape, where smugglers wage blood feuds by night, help seems very far away indeed. If Bowditch is going to catch a killer, he must survive on his own wits and discover strength he never knew he possessed.