In the Yukon Territory in 1931, a solitary American trapper, Albert Johnson, stumbles upon an organized dog fight and is drawn into a tense barter when he forcibly takes a badly injured white German Shepherd, paying $200 to its owner, a vicious trapper named Hazel. The clash sets off a chain of events that pull Johnson into a confrontation with a world he mostly keeps to himself, and it leaves Hazel nursing a grudge that will ignite one of the most infamous manhunts in frontier history.
Hazel, outraged by what he sees as theft, marshals several of his friends to hunt Johnson down at his remote cabin. The pursuit is brutal and chaotic: some pursuers shoot, others create diversions, and the dog Johnson cared for—Sitka—suffers a brutal fate. In the ensuing violence, Johnson kills one of the pursuers, Jimmy Tom, as the search closes in. The authorities and locals quickly become certain they are chasing the elusive “mad trapper,” a possibly mythical killer accused of murdering fellow trappers and stripping them of their gold teeth after the hits. Hints of the myth grow louder as the body count climbs and ammunition piles up—700 rounds bought at the local trading post and paid for in stacks of $100 bills paint a portrait of a man who lives by his own rules in the frozen wilderness.
An older trapper named Bill Luce warns Johnson that the law is closing in and the snowbound frontier will not protect him forever. Johnson fortifies his cabin, turning it into a stubborn citadel against a growing tide of outsiders who want his head. Into this powder keg step a Royal Canadian Mounted Police post led by Sergeant Edgar Millen, a capable if stern leader, who is joined by a seasoned tracker, Sundog Brown, and a young constable, Alvin Adams, along with a new lover, Vanessa McBride. They come to reckon Hazel’s accusations with a more measured judgment, and the hunt that follows becomes as much a test of wits and endurance as it is a pursuit of law.
Millen and his posse surround the cabin, trying to negotiate a peaceful solution. But the standoff erupts when one of the trappers opens fire, forcing the group to blow the cabin with dynamite in a desperate attempt to flush Johnson out. Johnson escapes by the skin of his teeth, killing a Mountie in the process, and the chase spills into the vast, treacherous winter terrain where only resilience and cunning can keep a person alive.
As the pursuit widens, Johnson relies on a suite of tracking skills to outmaneuver Millen’s posse and a growing flotilla of bounty hunters drawn by a hefty reward. The chase morphs into a national spectacle, a pull of patriotic duty and sensationalism, as Captain Hank Tucker, an Air Force pilot, joins the effort. Tucker reveals a darker, more intimate backstory: Johnson had served in a United States Army special intelligence unit during World War I, a detail that adds to the mystery and the aura around him.
Throughout the long pursuit, Johnson refuses to surrender. He survives on the land by reading the land itself—the wind, the snow, and the scarce sustenance it offers—while Millen gradually earns a grudging respect for the man he is pursuing, even as the outsider’s presence in the region strains the fabric of the community. The hunt intensifies as Luce, the older trapper who had warned Johnson, unexpectedly appears, and with a brutal efficiency shoots down two of the pursuing trappers and removes their gold teeth, cementing his own role in the myth of the mad trapper.
The stakes rise when Tucker’s aircraft is brought down by rifle fire as it strafes the hunting ground. Sundog is killed in the crossfire, a devastating blow to Millen and Adams, who manage to kill the aircraft with their rifles before it crashes into a canyon wall. Johnson uses the chaos to his advantage, escaping Hazel’s trap and turning the tables on his pursuers once again.
In a tense, ironic turn, Luce catches up with Johnson and attempts to finish him off. Johnson, however, manages to subdue Luce, holding him at gunpoint. The chase reaches a painful crescendo when Millen finally locates Johnson and fires, severely disfiguring him. Yet the victory is hollow: when the others arrive and survey the scene, it appears the man they shot was Johnson, but a glance up on a nearby ridge reveals the truth—Luce was the one wearing Johnson’s clothes. The hunt ends with a grim twist of fate and perception: the body of the “mad trapper” bears a pocket full of gold teeth, and the assembled crowd chooses to believe that Johnson is dead, even as the myth of the mad trapper continues to live on in memory and legend.
