In 1909, lively Texas Guinan (Betty Hutton) attends a Wild West show and, dressing like a man, enters a bucking bronco contest and wins. Impressed by her audacity, the show's manager, Bill hires her. In order to help support her family, Texas joins the rodeo and thrills the audience with her daredevil act. Texas and Bill (Arturo de Córdova) soon fall in love, but Bill refuses to marry her, so Texas leaves the show for the bright lights of Broadway not realising that Bill hides a secret.