The brother (House Peters Jr.) of rancher Bill Martin (Bill Elliott) is killed in a stampede started by cattleman. Bill returns to the Fargo country to take his brother's place and is welcomed by law-abiding cattleman MacKenzie (Jack Ingram)) and his daughter Kathy (Phyllis Coates). The leader of the ruthless cattle interests are townsman Austin (Arthur Space) and his henchmen Red (Myron Healey), Link (Robert J. Wilke) and Albord (Terry Frost). Bill has the idea of putting up barbed wire to keep the herds from been driven over the land cultivated by the farmers. He, aided by Tad Sloan (Fuzzy Knight), produces the wire by make-shift methods, but it proves effective. The cattleman charge in court that the wire is dangerous to their herds but lose the case. Austin orders his men to seize Bill, bale him in strands of the wire, and throw him on the stage of the town hall during a fall festival. Bill doesn't take kindly to this and it precipitates open war.

Buffalo Bill Cody battles a gang of outlaws secretly headed by an unscrupulous lawyer.

A sea captain about to be hanged for a murder he didn't commit is rescued from the gallows by two of his crewmen. They head for the island of Pulinan, where they believe the real murderer--the captain's former partner--is hiding so the captain can clear his name. As it turns out, their troubles are only beginning

As the sheriff of a small western town, Autry sings his way into a relationship with Eleanor, a singer from a Chicago nightclub who earlier witnessed a murder.

A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he settles in the African jungle, where his ability to cure the native ills has resulted in his virtual control of the Masamba tribes, who possess vast diamond mines coveted by a gang of crooks.

A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome saboteur Sakima.

The Shadow battles a villain known as The Black Tiger, who has the power to make himself invisible and is trying to take over the world with his death ray.

Federal Agents Tipton and Bridger have been sent to Wyoming where the vote on statehood is imminent. Plummer and his gang are out to make sure the vote fails. When Plummer's men kill Bridger, Tipton fights on. He sends fake telegrams that trap some of Plummer's men. Then he organizes the ranchers and on election day they descend on the town barricaded by Plummer's gang.

Superman battles Lex Luthor, who is using a teleportation device and a new identity as Atom Man in his criminal plans.