Willis Newcomb and Bart Carroll head a gang engaged in smuggling wanted-American criminals back into the United States from Mexico. Operating from Sharperville, an oil town on the American side of the border, they transport their human cargo in oil drums loaded on trucks. Border Patrolman Tom Sharper intercepts one of the trucks but is overpowered and left for dead. Carroll, having already been paid for the job and not wanting any evidence to walk around, get caught and lead back to him, backs the human-cargo trucks to the edge of a cliff and sends the drums crashing to the boulder far below. Judge Cookie Bullfincher and Border Patrolman Roy Rogers conduct a search for the missing Tom, but the crooks have gone back for him and find him in a state of amnesia. They rob the bank and pin it on Tom. It is now up to Roy to clear his friend and also put an end to Carroll's human-smuggling racket.

A singing territorial ranger (Gene Autry) spots his younger brother in an outlaw gang.

An outcast gambler hijacks a wagon train of eligible women taken west by a mayor.

A singing postal inspector (Gene Autry) and his partner (Smiley Burnette) save a woman's (Gail Davis) estate from fraud.

A singing frontier judge (Gene Autry) dismisses a case of double jeopardy.

Poachers are harassing toll road owner Jen Larrabee. They want her land because it holds valuable minerals. Autry and the Cass County Boys, mistaken for Texas Rangers, help out.

Rocky Lane hits the trail when he gets word that one of two brothers in a partner-ship mining project has been killed by outlaws trying to gain possession of the mine. The other brother Nugget Clark wants no part of the law, and is particularly set against the young sheriff courting his niece Trudy.

Major Daniel Kirby takes command of a squadron of Marine fliers just before they are about to go into combat. While the men are well meaning, he finds them undisciplined and prone to always finding excuses to do what is easy rather than what is necessary. The root of the problem is the second in command, Capt. Carl 'Griff' Griffin. Griff is the best flier in the group but Kirby finds him a poor commander who is not prepared to make the difficult decision that all commanders have to make - to put men in harm's way knowing that they may be killed.

Not to be confused with the 1929 film The Overland Telegraph, this Western from director Lesley Selander stars Tim Holt as a cowboy appropriately named Tim Holt. In order to hinder the construction of a new telegraph line for his own financial gain, scheming shopkeeper Paul Manning (George Nader) enlists the assistance of a gang of outlaws led by Brad Roberts (Hugh Beaumont in one of his many pre-Leave it to Beaver roles). Unfortunately for the bad guys, Holt and his cohort Chito Rafferty (Richard Martin) sense that there's foul play afoot and embark on an investigation.

Rocky Lane, out to find the murderer of his brother, runs into a battle between two stage lines for a mail contract.