Purchasing the Carney Carnival and Road Show, unscrupulous sportsman Martin Trask assumes he has ownership of Rex, the world's greatest trained horse, and its rider, Margie Smith. The girl releases Rex, flees from Trask in a runaway wagon, and finds shelter with young cowboy farmer Jack Merritt, with whom she falls in love.

Cast

Rex

Rex, the World's Greatest Horse (as Rex the Wonder Horse)

Jack Perrin

Jack Merritt

Helen Foster

Margie Smith

Tom London

Martin Trask

Jim Corey

Bit Role (uncredited)

Starlight the Horse

Starlight, Jack's Horse