When phony wanted posters put a price on the head of a retired Confederate officer, Colonel Sykes summons Josh Randall to help keep the bounty hunters at bay while also uncovering the person behind the bogus posters.
Randall is rooked into advancing half the bounty to a man who promises to lead him to the wanted criminal Shawnee Bill, but Bill is closer than Randall thinks and he's not even the only bounty hunter on his trail.
Randall is deputized to transport a ruthless killer to Tucson, but exchanges him for the nun kidnapped by the killer's gang. The nettlesome nun then becomes a thorn in his side as he sets out to recapture his prisoner.
Randall brings a suspected murderer to Pot Hole, but fears the man won't receive a fair trial when he finds the townspeople in the grip of a power-mad bully who serves as the hanging judge over a kangaroo court.
A woman on the lam for murdering her abusive husband seeks the help of her friend Josh Randall, who is willing to investigate her belief that her husband is still alive and responsible for the wanted posters that have made her a lucrative target for bounty hunters.
Josh sets out to help a heartbroken wife locate her missing husband, but his mission of mercy meets with a resistant and tight-lipped townspeople. The mission becomes desperate when Josh discovers another man is also seeking the missing husband, but with murder in mind.
Thieves are lying in wait to ambush mail carriers and eventually Josh is hired to help insure that the mail will get through. The thieves have news about a $20,000 Diamond Ring that is being delivered which they are waiting for. The trail is through desert country with no water for miles.
Josh and Brace Logan are met on the range by a group of men who want Logan, Josh's prisoner. When he refuses, he's hit from behind and loses Logan. When he gets to town to file a complaint he is surprised to find the sheriff was the leader of the men and his son was the one who hit him. Josh takes an interest in the case now and is determined to find the truth...especially since the sheriff's son wants to organize a lynching.
Josh needs a ride to Brannach fast in order to stop an unjust hanging. The only mode of transportation available is a coach carrying a load of dynamite with a surly driver who doesn't take well to Josh. He reluctantly agrees to allow Josh and his prisoner to travel with them. There are a number of obstacles on the way to slow them down...a river to pass, a washed out bridge and a prisoner who doesn't want to cooperate.
A man and a woman shoot an already dead man in a back alley making it look as if she shot him in self defense. Josh Randall arrives in Lordsville looking for Vic Warsaw, a killer he has been trailing. The sheriff informs Randall that Warsaw was shot and killed and has just been buried. Josh discovers that the man was shot by Lucy Fremont the town seamstress. After investigating Warsaw's personal effects Josh begins to suspect that Vic Warsaw may still be alive. He begins to question Lucy Fremont in order to get at the truth.
Several men escape from Yuma Prison with a thirst for revenge against a man named Aben Starr. He works at the Saddle Creek Way Station and Randall shows up there expecting the men to arrive also. Soon two of the escapees do arrive and take Josh and Starr captive while waiting for their partners to show. Before they do a stage rides in carrying a Quaker and his deaf-mute sister. They all wait for the other two men to show up so they can carry out their revenge against Starr.
Josh is in town for a bit of vacation when two bounty hunters, Ralph Meadows and Al Jarrett, arrive with a dead man. Their unethical methods offend Josh and he wants nothing to do with them. Josh tries to mind his own business but they think he's waiting for a big score and want in on it. Their constant surveillance soon wears on Josh and he devises a scheme to pit the two against each other.
A bounty hunter is not a hero in his own hometown, as Josh learns when he honors a dying friend's request to return his body to Cameron and the townspeople rush to judgment, believing Josh killed him for the reward money.
Josh is approached by the wife of a wanted man eager to turn himself in peacefully, provided Josh split the bounty with his wife. To ensure the deal goes as planned, Josh enlists the aid of an old friend: Sheriff Pat Garrett.
A decidedly different and dangerous assignment awaits Josh when he agrees to go into the Apache camp and compete in their contests to win the hand of a white woman the Indians kidnapped as a child and have raised as their own.
A violent religious cult cast lots and it falls upon a young woman to act as its angel of vengeance. Her mission is to murder Josh Randall in retaliation for his killing their cult leader's son in a shootout.
A concerned father hires Josh to retrieve his son, a passionate young ideologue whose gift for rousing rhetoric is being used by plunderers to recruit freedom fighters to serve in their phony liberation of Baja California.