Ex-cavalry buddies, Rex and Slim, band together to capture a wild stallion, solve a murder and thwart the killers from cheating a boy out of his inheritance.

Captain Hunt of the cavalry is trying to promote good relations with the Indian chief Acoma. But Hunt's superiors in the military insist on pursuing policies that will provoke a conflict, and Chief Acoma is not willing to let himself be insulted.

The story of a crude gangster hopelessly falling for a sweet young city government employee.