Tal is in a lot of trouble. Seems that his father has been murdered while he was in Montana and they put the blame on him. Also, he has been framed and sentenced to 10 years hard labor for another murder which he did not do. The crooks need convict labor to build the dam so they convict innocent people for a pool of cheap labor. But Karan believes that Tal, using the name Smith J. Brown, could not be a killer. Unknown to her, her step brother, Hub, is part of the gang.

Government agent Red Barton is sent to a small western town to find both the source of a recent series of gold robberies and the method they use to get the gold out of the county unseen. Complicating matters is the arrival of pretty Barbara Morgan who has come to claim her inheritance - the ranch the outlaw gang is using for their headquarters.

The Pony Express is finished as the Post Office plans to award the mail contract to a stage line. Bill and his father put in a bid for the mail, however there are three bids close together. The officials will run a race to pick the winner, and the Banton Brothers sabotage Bill's stage. Mary still believes in Bill until they try to get rid of him by holding up the regular stage with his well-known horse. Bill needs proof to clear himself and expose the bad guys.