Travelers find themselves marooned on an island with a maniacal self-made ruler.

Near Border Flats, Don Coyote and his friend Sancho are interrupted on their way to the fiesta by a fight. A quick intervention on their part prompts ranch owner Maggie Riley to hire them. Coyote and Sancho meet her surly, younger brother Ted who is wanting Maggie to sell their cattle herd to pay off a bank loan before they lose the ranch. But when they try to drive a herd to market, a gang led by Big Foot Ferguson drives off their cowhands.