Oscar has been sent to the plains to make a man of himself, is soon visited by his sister Sybil Estabrook, who travels west along with her maid in tow. Oscar, who has been losing at cards to Victor Dufresne, is forced by him to rob a stagecoach in order to pay off his gambling debts. Hal Emory, an honest cowpoke, rescues Sybil from a landslide, winning her affection. Hal later learns of Oscar's actions and himself takes the blame for the holdup in order to protect the boy. Dufresne plans to kill Oscar, and Hal arrives just in time to prevent the crime. Dufresne is later killed by falling rocks, Oscar settles his account with the law, and Hal wins Sybil's love.