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.

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.

Both Nolan and Ross are losing cattle and Ross' foreman Kerns is the culprit. When Taylor finds a wanted poster of Kerns he goes after him.

Landis kills Tom Ross but fails to get his money. Now he is after the Ross ranch for the money he knows is there. When he tries to evict Ross with gambling IOU's, Bill drives him away. With the Ross cowhands out after his rustlers, he finds the money. But Bill is right on his trail.

A cowboy at a dude ranch falls for the spoiled daughter of a rich guest at the ranch. Later he uncovers a gang of thieves who are robbing the guests.

Hester and Hezekiah plan to get Dorothy Horton's inheritance. But when Pete and his men rob the stage they learn of the scheme and send Jim to replace Hezekiah. The Deputy Marshal breaks this up but Black Pete arrives wearing the Marshal's badge and has the Sheriff take him away while he flees with the inheritance money.

Young Henry Randolph has run up gambling debts to Slade and Slade has arrived to collect the money. When Slade tells Henry he will inform his father, Henry threatens him. When Slade is later found murdered, the posse heads out after Henry. Henry claims he is innocent but flees anyway when the posse approaches.