Gene Autry, a horse trader who believes that horses are more valuable than trackers in the West, boosts sales by organizing barn dances and shows before his auctions. Soon after arriving in Grainville, Gene is approached by radio station owner Sally Dawson, who wants him to sing on a program sponsored by Thornton Farming Equipment. Gene refuses, even though he finds Sally appealing, so Sally sets up an audition by secretly recording his show for company owner Thornton. Impressed, Thornton agrees to give Sally an advance for the shows, thus saving her equipment from repossession. She then tells Gene that if he signs a contract he would work for her, not Thornton. For several weeks Gene performs at barn dance shows as Sally sends the broadcasts out through remote control hook-ups. Believing that Gene now endorses the tractors, more farmers buy them, but as harvest time approaches, several farmers receive delinquency notices from a finance company secretly backed by Thornton. They are faced with repossession if payment is not made by the time of the county fair. Blaming Gene, the farmers confront him, and Gene finally learns the truth from Sally. He then promises to let the farmers use his horses free of charge until they are able to pay and starts to move them back towards Grainville. Meanwhile, Sally is forced by Thornton to use some of Gene's records to continue the show because she cannot pay his advance back and fears for her paraplygic father's health. Gene's herd is soon stampeded by some of Thornton's men during the drive, and a cowboy is seriously injured. As the farmers wait for Gene, they think he has lied to him when they hear his voice on the radio. When Gene shows up in person, though, he realizes what has happened and goes to the radio station with his friend Frog to destroy the records. Although they leave the station in ruins, Johnny, Sally's younger brother, has managed to salvage pieces of a record he made of Thornton and one of his men discussing the stampede. As the county fair is underway, Gene arrives with some of his horses, but the sheriff seizes them because of Thornton's claim for damages to the station. As Frog drives a tractor wildly through the fair, Johnny and Sally play the incriminating record over the public address system. Thornton and his man go to the station to get them, but Sally and Johnny escape in their car. Thornton drives after them, but Gene follows on horseback and captures Thornton. Finally, Gene and Sally ride home side by side.