Mr. Thornton (Ivan Miller), the wealthy owner of an exploitative tractor company, drives horse breeder Gene Autry (Gene Autry) and his faithful sidekick, Frog Millhouse (Smiley Burnette), out of business. Thornton swindles the townspeople and -- to add insult to injury -- secretly signs on as the underwriter of Autry's new singing cowboy radio show. After angry listeners confront him about his affiliation with the tractor company, Autry struggles to stop Thornton and clear his own sullied name.