Wanted for a murder he didn't commit, Lightnin' Jack travels to Arizona where he gets a job on the Manning ranch. Two men are out to get the Manning ranch and see their chance when Manning decides to use Lightnin's horse in the big race. They get Manning to bet his ranch and then kidnap Lightnin' so he won't be there to ride.

Reparto

Jack Perrin

Lightin' Jack Hardy

Josephine Hill

Mildred Manning

Jack Richardson

Bud Knowles

Jack Phipps

Ned Knowles

Thomas Foster

Judd Manning

Horace B. Carpenter

Sheriff Higgins

Lew Meehan

Spike (uncredited)