In a 16th century kingdom in the Netherlands, the newly crowned King Stephan concludes a secret treaty with the Spanish. This puts him at odds with his younger brother, Prince Roland, who favors a treaty with the French. Stephan orders Roland imprisoned but Roland escapes and leads a revolt.

Doc Lockwood and his gang are trying to take away Autry's contract for supplying horses to the stagecoach line. Parson Brooks joins Autry in an effort to clean up the town of Sadderlock.

Mahoney is a sheep man who's framed for the murder of a rancher. It's all part of a scheme by a dishonest cattleman who hopes to extenuate a range war for his own profit. The Durango Kid helps clear Mahoney's name.

Red Ryder gets a telegram from his old friend Dan O'Connor asking for help in his fight against Faro Savage and his gang of rustlers. A gun dropped by Faro during a rustling raid makes Red and Sheila O'Connor, Dan's daughter, think they have ample proof against Faro but they are stymied by the law. Buckskin Blodgett and the Duchess, Red's aunt, find the body of O'Connor who was killed when Faro's men sent the sheriff out on a ruse. Sheila, discovered while rifling Faros office for evidence, escapes but not before she is recognized. Faro kills one of his own henchmen and then frames Sheila for the murder. Red and Little Beaver set out to clear Sheila and to try to find evidence against Faro and his gang. Written by Les Adams

It's 1893 and gold is being smuggled out of the country. Instead of stealing gold bars, the outlaws are stealing high grade ore, having it smelted, and then having it plated to look like lead. The Government sends agents Bret and Larry who arrive in Cripple Creek posing as Texas gunfighters. Bret finds the smelting operation and Larry learns of the payoff. But the crooked town Marshal is suspicious of the two men and the reply of his inquiry to Texas exposes them putting their lives in danger.

Mota is a Martian representative, who has come to impose interplanetary law on the Earth (which has become too dangerous); opposing his authority is Kent Fowler, who resists the alien plot, without understanding its details.

Jobless sportswriter Eddie Willis is hired by corrupt fight promoter Nick Benko to promote his current protégé, an unknown Argentinian boxer named Toro Moreno. Although Moreno is a hulking giant, his chances for success are hampered by a powder-puff punch and a glass jaw. Exploiting Willis' reputation for integrity and standing in the boxing community, Benko arranges a series of fixed fights that propel the unsophisticated Moreno to #1 contender for the championship. The reigning champ, the sadistic Buddy Brannen, harbors resentment at the publicity Toro has been receiving and vows to viciously punish him in the ring. Eddie must now decide whether or not to tell the naive Toro the truth.

Raoul Leduc is a police inspector trailing a spy who plots to kidnap an important American atomic scientist. Joe Victor a gangster who is hired to carry out the abduction, balks when he learns what is at stake and helps Leduc out instead.

Reformed parolee Steve Lacey is caught in the middle when a wounded former cellmate seeks him out for shelter. The other two former cellmates then attempt to force him into doing a bank job.

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).