When a nun broke her covenant with God to save the life of her unborn son, Aman, he was cursed for life. As an adult, Aman has killed those who have crossed him. But his curse brings his victims back to life and they pursue him for revenge, so Aman enlists a young gunman to fight by his side against his undead victims.
Lawman Wyatt Earp and outlaw Doc Holliday form an unlikely alliance which culminates in their participation in the legendary Gunfight at the O.K. Corral.
Bill Meceita, a boy whose family was murdered in front of him by a gang, sets out 15 years later to exact revenge. On his journey, he finds himself continually sparring and occasionally cooperating with Ryan, a gunfighter on his own quest for vengeance, who knows more than he says about Bill's tragedy.
Two miners agree to guide a mysterious woman, who has appeared in their camp from nowhere, to a nearby town; but soon, because of her erratic behavior, they begin to suspect that her true purpose is quite different.
Notorious shootist and womanizer Quirt Evans' horse collapses as he passes a Quaker family's home. Quirt has been wounded, and the kindly family takes him in to nurse him back to health against the advice of others. The handsome Evans quickly attracts the affections of their beautiful daughter, Penelope. He develops an affection for the family and their faith, but his troubled past follows him.
Running from the law after a bank robbery in Mexico, Dad Longworth finds an opportunity to take the stolen gold and leave his partner Rio to be captured. Years later, Rio escapes from the prison where he has been since, and hunts down Dad for revenge. Dad is now a respectable sheriff in California, and has been living in fear of Rio's return.
A bandit kidnaps a Marshal who has seen a map showing a gold vein on Indian lands, but other groups are looking for it too, while the Apache try to keep the secret location undisturbed.
A Union Cavalry outfit is sent behind confederate lines in strength to destroy a rail supply center. Along with them is sent a doctor who causes instant antipathy between him and the commander. The secret plan for the mission is overheard by a southern belle who must be taken along to assure her silence.
Ageing, wealthy, rancher and self-made man, George Washington McLintock is forced to deal with numerous personal and professional problems. Seemingly everyone wants a piece of his enormous farmstead, including high-ranking government men and nearby Native Americans. As McLintock tries to juggle his various adversaries, his wife—who left him two years previously—suddenly returns. But she isn't interested in George; she wants custody of their daughter.
Heading east to Fort Worth to hire a schoolteacher for his frontier town home, Link Jones is stranded with singer Billie Ellis and gambler Sam Beasley when their train is held up. For shelter, Jones leads them to his nearby former home, where he was brought up an outlaw. Finding the gang still living in the shack, Jones pretends to be ready to return to a life crime.
Ten years after the Civil War has ended, the Governor of Texas asks Leander McNelly to form a company of Rangers to help uphold the law along the Mexican border. With a few veterans of the war, most of the recruits are young men who have little or no experience with guns or policing crime.
After the American Civil War, mercenaries travel to Mexico to fight in their revolution for money. The former soldier and gentleman Benjamin Trane meets the gunman and killer Joe Erin and his men, and together they are hired by the Emperor Maximillian and the Marquis Henri de Labordere to escort the Countess Marie Duvarre to the harbor of Vera Cruz.
Lt. Col. Kirby Yorke is posted on the Texas frontier to defend settlers against depredations of marauding Apaches. Col. Yorke is under considerable stress by a serious shortage of troops of his command. Tension is added when Yorke's son (whom he hasn't seen in fifteen years), Trooper Jeff Yorke, is one of 18 recruits sent to the regiment.
When brash Texas border officer Mike Norton wrongfully kills and buries the friend and ranch hand of Pete Perkins, the latter is reminded of a promise he made to bury his friend, Melquiades Estrada, in his Mexican home town. He kidnaps Norton and exhumes Estrada's corpse, and the odd caravan sets out on horseback for Mexico.
On a trip to the beach, a teenage girl named Tobe meets a charismatic stranger named Harlan, who dresses like a cowboy and claims to be a former ranch hand. The pair feel an instant attraction and begin a relationship, but her father, a lawman, is suspicious of her lover.