Bronco has to sweet-talk two stubborn frontier men when one refuses to allow the construction of a dam on his land, provoking a journalist to write a story that causes an international incident.
Bronco hires gunman Clay Farraday to help with a cattle drive, but when Clay falls for a scheming beauty Bronco has to try to talk his helper out of a shootout with Wild Bill Hickock.
Leading a group of bitter Confederate POWs west to fulfill their pledge to help the Union fight the Indians, Bronco is also in charge of a gold delivery headed to Mexico and a secret assignment from the murdered president Abraham Lincoln.
Bronco sets himself up in the cattle business only to find that a local rancher is using his control of the only road to the market to kill off his competition.
As part of a scheme to uncover an insurrectionist group famous actor Edwin Booth pretends to share his relative James Wilkes Booth's hatred of the Union. But when irate townspeople try to kill the traitor, Bronco must protect the seeming turncoat.
Bronco reluctantly works to help an outlaw rob a gold shipment, knowing that any disruption of the man's plans will result in the death of his hostage.
Bronco helps a small herder resists a brutal rancher and finds himself accused of murder when the man's unbalanced wife becomes a tool for the canny rancher.
Bronco's attempt to capture a killer alive runs into a snag when a band of renegade Apaches set out to kill his prisoner in hopes of sparking an uprising.
Bronco finally talks an Army officer into sending the Osage to a fertile Wyoming territory, but a cholera epidemic and a hostile new commander threatens to destroy the plan.
Bronco wins a range war with the help of Billy the Kid, but when the dust settles the outlaw is still wanted by the law and by bounty-hunter Pat Garrett.
Bronco hires refugees from the fallen Maximillian empire, but has to contend with bandits who are convinced the mother and son know what happened to $5 million in missing gold.
Bronco goes in search of the only man who can clear him of a murder charge, but must disguise himself when his quarry goes to ground in a lawless town known as a haven for criminals.
Bronco agrees to deliver a riverboat for his friend Martha Chandler despite a ruthless businessman intent on stopping the cargo from reaching its destination and a blonde passenger with a mysterious agenda.
Bronco is hired to teach at a military academy but ends up searching for a would-be killer after a cadet's realization that he's half-Sioux prompts an attempt on his life.
Bronco is framed for murder when the ruthless Traxel brothers and gangleader Willis Turner sets him up for the murder of his best friend. Only the testimony of a mute child can rescue Bronco from the gallows.
Bronco leads a wagon train through the wilderness but the danger comes from within as an old war buddy provokes a local cattle baron when he brings along the man's runaway daughter.
Bronco is hired to guide a writer to a ghost town, but repeated attempts on both their lives reveals her true purpose: to find a man buried in a nearby glacier.