John Cannon faces alienation of family and friends when he maintains his decision to aid a band of revolutionists.

John Cannon, seeing a financial windfall in the sale of guns, ammunition and horses to ill-equipped Mexican rebels, negotiates with their leader over strong objections from his Mexican-born wife, Victoria, and her brother, Manolito. Even when Manolito elects to leave the Cannon ranch for good, John continues his profit-making deals despite the reaction of his family.