Jean DeBois kills a man who pesters his beautiful daughter Renee. Subsequently, Renee is blackmailed by an unscrupulous suitor, Captain Blake, who threatens to expose her father if she refuses to marry him.

Trapper Jean Debois, accompanied by his daughter, Renée, arrives with his annual catch of pelts at Carbeau's trading post, and when the wily trader tries to swindle and kill Jean, he is himself killed in the struggle. Blake, a sea captain, fired with rum, threatens to have Jean arrested for murder unless the girl becomes his wife. To save her father, Renée pretends to love Blake, but Bob Stanton, a young engineer, attacks Blake and agrees to help Jean. Aboard ship, Blake creates an "accident" that kills Jean and wounds Bob; when they arrive at the cove, Renée escapes with Bob by sled, pursued by Blake; they are halted by a blizzard, but Blake falls to his death when attacked by a dog.