Bat grubstakes Cactus Charlie, an elderly prospector searching for a gold strike. Charlie finds gold, all right, the proceeds from a recent stagecoach robbery and the crooks who buried the loot will stop at nothing to recover their ill-gotten gains.
The town council of Midas Creek hire Bat to run their annual shooting contest. The council believe that the local bully will cheat, threaten and generally do anything in his power to win the contest. When the local gunsmith wins the hefty prize, the enraged troublemaker abducts a beautiful girl to force Bat to meet him in a deadly contest of arms - the thug's rifle vs. Bat's pistol.
An Englishman has a theory that accuracy is more important in a gunfight than speed or size of the ammunition. When he kills a bully with his specially designed rifled pistol, the Englishman decides he's ready to take on the West's greatest gunfighter - Bat Masterson.
When Bat catches his partner in a gambling casino embezzling money, he kicks the man out, telling him never return unless he brings $25,000 to buy Bat's interest in the business. The partner plans to get control of Bat's half by killing him.
Bat rides to the assistance of his friend, a sheriff, but arrives after the Dakota boys gun him down. The president of the town council asks Bat to step into the office, but Bat decides the job should go to another person.
Bat thinks a young gunfighter might be the son of a man with whom he fought at the Battle of Adobe Wells. He plans to appeal to the governor for a pardon for his crimes because of the unrewarded service of his father.
Bat returns to Casper, Wyoming to testify at a murder trial. He learns that all the other witnesses are either dead or are afraid to testify and the father of the man under arrest intends to eliminate the last witness
Bat inherits a casino from an old enemy and soon discovers the reasons for the man's largess. Upon arriving in town, he learns that the casino was $3000 behind in its mortgage payments and the previous owner was killed by the town marshal who owned the mortgage.
An eastern gambler playing a "system" breaks the bank at Bat's casino, putting the dapper Masterson out of business. Bat wonders if the "system" didn't have more than a little help from his pretty dealer.
The stagecoach in which Bat Masterson, Major Mars and pretty Lottie Tremaine are traveling is waylaid by a vengeful gang led by an Indian whose family was slain when the Major's men wiped out a village full of non-combatants. Bat is forced to defend the Major during a kangaroo court.
Pat arrives in Paradise, Colorado to collect a gambling debt from a crooked casino owner who doesn't like to pay his debts. He also doesn't like to pay his taxes, going so far as to change the course of a river so his town would lie beyond the authority of the county tax assessor - until Bat accepts the appointment.
Bat's lucrative contract to build a train through the mountains is in jeopardy. His crew is attacked by Indian, menaced by natural disasters and then wagon loads of equipment fall over a cliff. Just when things it seems things can't get worse, Bat is arrested for the murder of an Army supply sergeant.
Bat's old friend, Marshal Ben Holt, asks him to help fight a scheme plotted by the power-grabbing land baron. When he arrives Bat isn't sure that the Marshal is on the side of law and order.
Bat's plan to journey to Cheyenne for a big poker game are disrupted when the cavalry escort for a vital load of gunpowder is wiped out and the only men available to drive the wagons to Fort Stewart appear unreliable. At his old friend Billy Willow's request, Bat agrees to lead the wagon train through hostile Indian territory.
A villainous saloonkeeper plots to take over Bat's bank by preventing the gold bars the bank needs to back its gold certificates from getting through and then provoking a run on the bank by its frightened depositors.
When gunslingers employed by Sam Shanks terrorize a small New Mexico town, Bat agrees to serve as a special prosecutor when one of Shank's men is to be tried for murder.
During a holdup, a gang of outlaws tries to take a Medal of Honor from a woman whose husband gave his life earning it. Bat offers a hundred dollars he has stashed in his cane in exchange for the medal, but the gunman escapes with Bat's money, cane and the medal of honor with Bat in hot pursuit.
Bat's hard riding rescues three men from the gallows - he bears an amnesty signed by the Governor of New Mexico and the President of the United States for all combatants in the Lincoln County War. The three gunmen soon return to their criminal ways and Bat must help the local marshal hunt down the recently freed men.
Bat rescues a woman from three men trying to grab her and her carpet bag. The woman tells Bat she was the prisoner of a gang of outlaws who rode with Jesse James and has the evidence to prove it.
Several Indian tribes claim that white men are kidnapping their women and children to be sold for slaves or held for ransom. In order to prevent an all-out war with the local tribes, the U.S. Army sends Bat Masterson to investigate.
Bat is wounded by Indians while trying to deliver a message to Fort Logan's commanding officer. The fort's ambitious second-in-command intercepts and destroys the message, resulting in the death of the Colonel and his entire patrol. Bat believes that the second-in-command intentionally allowed his commanding officer to walk into a trap in order to further his own political career and attempts to prove it by bringing back the Colonel from the dead.
Bat rides into town to meet a young friend. He arrives too late - the young man was killed when he accused a three wealthy ranchers of cheating at cards and the sheriff refused to arrest the men responsible for murder.
When a new silver strike is made in Monument City, Nevada, Bat returns to the former ghost town to check on his old claim and find two claim jumpers are prepared to shoot first and ask questions later.
The Pinkerton Detective Agency hires Bat to get evidence against a outlaw gang that is terrorizing the Southwest. Bat goes undercover as a marble salesman and convinces the gang's leader that so prominent a citizen should have a statue in his honor erected in the town square.
Bat is ambushed in the desert, his horse stolen and his canteen empty. Rescued by the town marshal, Bat determines to help the young lawman gain confidence in his ability to keep the peace.