Big city gangster muscle in on ranch territory with a cattle protection racket. Out to stop them is federal agent Jack Perrin.

After having been gone for some time, a cowboy comes home to his ranch to find himself up against a gang involved in smuggling Chinese into the country.

Perrin plays a boxer whose manager takes him out to a ranch for training, but Perrin soon discovers the ranch foreman is responsible for a $100,000 jewel heist.