Returning from Helena, where she has joined her late husband's parents, Marie is forced to stay overnight at a stage stop during a storm. During the night, one of the travelers is found murdered with Charles Dumont's knife in his chest.
Willie and Lucy stumble upon a dead body, and Jack and Clive track down a U.S. Marshal who has illegally entered Canada while chasing an escaped criminal.
An educated Cree Indian produces documents claiming that Bordertown belongs to the Cree Nation.
Marie's competence as a doctor is questioned when a patient dies of minor injuries. Gilbert claims controlling partnership in Marie's store.
A farmer accuses Couteau of murdering a man who had wronged the Metis tribe of Indians. The farmer's son backs up his father's story, claiming to be a witness, even though he was not present when the shooting occurred.
When Clive goes after the outlaws who wounded Jack and killed two other lawmen, his pistol misfires, blinding him. To elude the outlaws, he must rely on the help of a young woman he had run out of Bordertown years earlier.
When a horse trader comes to town, Jack and Clive purchase a horse for Willie, but they are forced to arrest the trader when two men ride in to town claiming that the herd belongs to them.
Jack is assigned the task of escorting an affable prisoner into Canadian hands, but the prisoner is being pursued by a couple of thugs who want him to answer for American crimes. To make matters worse for the lawman, his prisoner is an escape artist who has enlisted the help of his girlfriend.
When Bat Masterson kills a member of an outlaw gang and uses Jack Craddock's name to collect the reward, the rest of the gang comes to Bordertown seeking revenge, culminating in a major gunfight on the streets of Bordertown.
Clive and Anna plan their wedding. Delighted that his son is getting married, Clive's father arrives from Toronto to perform the ceremony. On the day of the wedding, the surviving moonshiner takes his revenge on Clive.
Clive's former flame, Anna, the wife of his deceased friend, stops in Bordertown to visit her husband's grave, and rekindles her relationship with the Mountie. Meanwhile, Jack and Clive break up a group of moonshiners, but one of them escapes, vowing revenge on Clive.