Newly appointed sheriff Pat Garrett is pleased when his old friend Doc Holliday arrives in Lincoln, New Mexico on the stage. Doc is trailing his stolen horse, and it is discovered in the possession of Billy the Kid. In a surprising turnaround, Billy and Doc become friends. This causes the friendship between Doc and Pat to cool. The odd relationship between Doc and Billy grows stranger when Doc hides Billy at his girl Rio's place after Billy is shot.
Buck Roberts is leading a wagon train of railroad supplies and Jim Corkle and his henchman Loder are out to stop them by using white men dressed as Indians for the attacks.
America's favorite singing cowboy Gene Autry stars in this vintage tale as an up-and-coming rodeo singer caught in the middle of two rival companies, both angling to ride the talented crooner to riches. Featuring several memorable musical performances from Autry, including renditions of "Forgive Me" and "In Old Capistrano," this rousing Western co-stars Smiley Burnette, Virginia Grey and Lucien Littlefield.
Gene Autry heads a cattlemen's association and calls on the inexperienced Jim Agnew to negotiate the sale of five hundred heads of cattle. Jim ends up losing the cattle in a crooked poker game, however, and Gene and his sidekick Frog set out to find the cheating gamblers. It soon becomes clear that the leader of the gamblers is none other than Asa Lock, the dastardly father of Gene's romantic interest Stephanie.
Billy the Kid and his pal Jeff help their friend Fuzzy Jones escape from jail, and the trio heads for Paradise Valley, where they find the Paradise Land Development Company, ran by Matt Brawley and Jack Saunders, is somewhat less than honest in their dealings with the homesteaders. They devise a plan to cause a split between Brawley and Saunders.
Rodeo champ Gene Autry inherits half interest in both a ranch and a mine that provides steady employment for the surrounding rancheros. Unfortunately, the other half goes to Easterner Barbara Erwin (Carol Hughes), who is only interested in monetary remuneration. To convince Gene to buy her share, Barbara enters into an unholy alliance with unscrupulous attorneys Arnold (Ivan Miller) and Fry (Sam Flint), who, without their client's consent, hire a gang of thugs headed by Tommick (John Merton). When a ranchero (Elias Gamboa) is mortally wounded in the ensuing gun battle, Barbara sees the error of her way and switches sides.
Gene returns from the East with new ranch owner Tom Bennett to find everyone's cattle dying. Blaine has reopened the copper mine and the waste is poisoning the water supply. While Gene is away Tom confronts the miners and a man is killed in the ensuing gunfight. Now Gene not only has the dying cattle problem but his ranch owner is in jail.
As a penalty for fighting fellow classmates days before graduating from West Point, J.E.B. Stuart, George Armstrong Custer and four friends are assigned to the 2nd Cavalry, stationed at Fort Leavenworth. While there they aid in the capture and execution of the abolitionist, John Brown following the Battle of Harper's Ferry.
Bill Hickok, assisted by Calamity Jane, is after a foreign agent and his guerrilla band who are trying to take over some western territory just as the Civil War is coming to a close.
Trouble in Colorado is tying up Union troops needed back east during the Civil War and Lieut. Burke is sent to investigate. Macklin and his gang are causing the problems and Capt. Mason joins them. When Burke catches up with them he also finds Mason, his brother.