Boyd Monteith

Al Parker, an aviator and Secret Service agent, is assigned to investigate a gang of bandits who have been robbing a platinum mine on the Mexican-American border. The superintendent of the mine, John Ames, is killed when he discovers a secret passage used by the bandits, and his daughter, Edith, assumes the running of the mine. Edith is kidnapped by the gang's leader, McLeod, who makes his escape in a waiting airplane.

Bruce Torrence is an aviator and member of the secret service. His rival for the hand of Zella Wingate is Juan Lascelles, a drug smuggler. To get rid of Torrence, Lascelles loosens a wheel on one of his planes, but Zella is the one who goes up in it. Torrence goes up in another plane and attaches a fresh wheel to Zella's plane. In spite of his efforts he later finds her in Lascelles' arms.