A Border Patrolman goes undercover to break up a smuggling ring on the Arizona-Mexico border.

The simplified plot has two different gangs attempting to wrest control of valuable Oklahoma oil lands from an orphaned girl, who is aided in her fight by her adopted father Chris Morrell.

A card sharp steps in when a Mexican family's ranch is threatened by swindlers and cheats.

Ken and Happy, looking for their friend Cherokee, run into an outlaw gang led by Ritter who have been terrorizing the ranchers. Ken figures that one of the prominent citizens is the real boss and sets a trap to find him.

Trouble starts when Bill Larkins and his two sons move in with his brother Joe. They start rustling cattle and then kill Rod's father with Joe's gun. The Sheriff and Rod think they did it and are after proof.

Bill Carson arrives and tells Cash Horton that his supposedly worthless mine contains valuable tungsten. Duke learns of the mine's value and tries to have them both killed. Failing, he has the Sheriff arrest Bill for murder. Unknown to Bill and the Sheriff, the victim is alive and well.

Desperados menace a mining operation.

A Treasury Department engraver is being held captive by a counterfeiting gang that wants him to make counterfeit plates for them. A lawman is sent to rescue him.

Kirby and Evans are pulling off an irrigation project swindle and newspaper editor Scott realizes it and sends for Lee. Lee agrees with Scott and forms a vigilante group to fight the Sheriff and his deputies brought in by Kirby. But a dying Uncle Dan sets the Sheriff straight and this brings the two sides together for the big shootout.

Chasing jewel thieves, Captain Carson and Magpie head for the border where Carson, posing as a Chinaman, opens a store that buys jewelry. To flush the thieves into the open, Carson wins all their money at poker. They agree to sell him the jewels but plan to kill him and keep both the jewels and the money.