Dissipated youth Tommy Hilgrade is sent to the lumber lands in the Northwest by his father who hopes that hard living will reform his son. Accompanying Tommy is his sister Marion. Upon their arrival in Canada, lumber foreman Jack Macy is attracted to Marion but, unknown to her, he contributes to Tommy's addiction to drink and gambling. When Marion falls in love with French Canadian Jules Bonnivet after he rescues her from a fall through the ice, Macy schemes to destroy their romance by fabricating the story that Jules is responsible for Tommy's downfall. Marion believes the accusation and denounces the French Canadian, but later discovers his innocence and apologizes. Frustrated, Macy attacks Marion, who escapes and flees to Jules's cabin. Meeting upon the trail, a fight ensues between the two men but is interrupted by the appearance of a crowd led by Durant who accuses Jules of betraying his daughter Annice. The crowd seizes Jules until Annice appears and denounces Macy as her betrayer. Thus exonerated of all false accusations, Jules and Marion embrace.