When a shady-looking stranger rides into town to join his old friend it is assumed he is a hired gun. But as the new man comes to realise the unlawful nature of his buddy's business and the way the homesteaders are being used, the two men draw apart to become sworn enemies.

On a scientific expedition to Siam young Billy Batson is given the ability to change himself into the super-powered Captain Marvel by the wizard Shazam, who tells him his powers will last only as long as the Golden Scorpion idol is threatened. Finding the idol, the scientists realize it could be the most powerful weapon in the world and remove the lenses that energize it, distributing them among themselves so that no one would be able to use the idol by himself. Back in the US, Billy Batson, as Captain Marvel, wages a battle against an evil, hooded figure, the Scorpion, who hopes to accumulate all five lenses, thereby gaining control of the super-powerful weapon.

A simple stagecoach trip is complicated by the fact that Geronimo is on the warpath in the area. The passengers on the coach include a a drunken doctor, two women, a bank manager who has taken off with his client's money, and the famous Ringo Kid, among others.

A town bedeviled with outlaws sends for Hoppy, Lucky and California after their own vigilante committee fails to solve the towns problems. Hoppy discovers that the bad guys are led by the town boss, and so are the vigilantes.

Good-natured troublemaker "Cyclone" Tom Saunders is hired by a ranchers' association manager to investigate recent cattle rustling at one of their ranches and to see if a pair of nesters have anything to do with it. After discovering the nesters, pretty Betty Powell and her rickety old father, are incapable of rustling, Tom instead turns his attention to the huge, swaggering bully of a foreman, Nate Lenox.

An escaped political prisoner and a stuffy law professor vie for the hand of a spirited schoolteacher.