A cowboy goes after a gang of stagecoach robbers who murdered his brother.

Gene Autry is back near the saddle, trying to help out a crippled jockey. Gene is certain that the jockey can ride in the Big Race if the lad can regain his self-confidence. Meanwhile, Gene and comical sidekick Sterling Holloway have another problem on their hands: A rogue stallion has "kidnapped" Gene's prize mare. Piloting a plane, Autry seeks out and locates the stallion.

Gene and Pokie are on vacation in Mexico when they learn that their buddy Dusty has been bumped off.

Autry is drawn into the plot when he's given power of attorney in a property settlement involving his old pal and a gang of land swindlers. The pal then goes on an extended vacation, leaving Autry to sort things out.

20 years ago, 3 men robbed a stage and hid $30,000. They were caught and sent to prison by Marshal Steve Autry. 20 years later, the men bust out of prison and return to the ghost town where they stashed their treasure searching. Steve's grandson picks up where Steve left off to foil the plans of the outlaws.

Not quite as memorable as his previous Riders in the Sky, Gene Autry's Sons of New Mexico is still well up to the star's standard. This time, Gene tries to reform Randy Pryor, a would-be juvenile delinquent, played by Autry-protégé Dick Jones (who later starred in the Autry-produced TV series Range Rider and Buffalo Bill Jr). To this end, Pryor is enrolled at the New Mexico Military Institute, where much of this film was lensed. The kid chafes at the school's regimen and escapes, heading back to his criminal mentor Pat Feeney (Robert Armstrong).

Gene Autry becomes the new Sheriff after bank robbers kill the former sheriff. When Judge Beaumont is murdered, evidence points to the judge's wild son. Believing the young man, Gene tries to help.

At the close of the Civil War, a band of Southern guerillas disguised themselves as Union soldiers, the better to perform acts of sabotage in Utah. Autry plays a cavalry scout who goes after guerilla leader McQuarrie.

Lacey is after the profits of the Foster and Morales rodeo show. He has Morales killed during a stunt and then forces Foster to take him on as a silent partner. When Rex Allen joins the show, Lacey tries to get rid of him also. But Rex survives and now believes Morales' accident may have been murder.

A cattle buyer, a federal agent and a newswoman snip a railroad plot.