After his superior officer is murdered while tracking suspected killer and fur thief Andre La Farge, Burke, a new North West Mounted Police recruit, vows to bring La Farge to justice. With his fellow trooper, Blackie, Burke poses as a trapper in the local village, where store owner Jim Hatfield, who has been robbed repeatedly by La Farge, is offering a reward for the fugitive's capture. As Burke and Hatfield discuss the reward in the village saloon, an Indian hurls a knife with a threatening note signed "La Farge" at them. Burke and Blackie follow the Indian and, after reading his smoke signal, decide to stake out Hatfield's trading store that night. While hiding, Burke and Blackie observe La Farge, his sister Diane, and their gang ride up and break into the store. Before La Farge takes Hatfield's money at gunpoint, Burke fires his gun and breaks up the robbery. During the gang's getaway, Burke is shot by Hatfield's men and is rescued by La Farge. While Burke is recuperating at La Farge's mountain hideout, Blackie shows up and is caught by La Farge's men. Although Burke diverts suspicion by telling La Farge that Blackie has been tracking him for months, he fakes killing his friend to protect their undercover operation. La Farge, however, knows that Blackie is still alive and insists on helping Burke bury him. While in a coffin, Blackie surprises La Farge, who is then knocked out, put in the coffin and raced down the mountain by Burke. In his haste to flee La Farge's men, Burke loses control of the cart, which tumbles down a hillside, spilling La Farge. Burke takes La Farge to a cabin, which turns out to be a hideout for Hatfield and his men, who have just kidnapped Diane as part of a scheme to trap La Farge. Through a cabin window, Burke, who has turned La Farge over to Hatfield, overhears Hatfield and another man plotting La Farge's and Diane's murder and confessing to killing La Farge's trapper father and Burke's superior officer. After freeing La Farge and Diane, Burke overwhelms Hatfield and his men with La Farge and Blackie's help. Cleared of all suspicion, La Farge and Diane return to run the trading store, while Burke is promoted and assigned to a nearby post.