In 1865, Captain Mark Smith of the Confederate Army leads a band of deserters to conquer Texas and rule it as a dictator. In one of his first actions, he captures and assumes the identity of Texas' new Finance Commissioner, Colonel Marcus Jeffries, after having the real man murdered. When a contingent of Texas Rangers enters the territory, Snead, one of Smith's men, leads them into an ambush by Smith's "troopers". The Rangers are apparently wiped out, although one injured survivor is left. The survivor, nursed back to health by Tonto, swears to avenge the massacre and defeat "Colonel Jeffries" and his men.

Bruce Bennettas Bert Rogers
Lee Powellas Allen King
Chief Thundercloudas Tonto
Lynne Robertsas Joan Blanchard
Stanley Andrewsas Captain Smith aka Colonel Jeffries
George Clevelandas George Blanchard
William Farnumas Father McKim
Hal Taliaferroas Bob Stuart
Lane Chandleras Dick Forrest
George Montgomeryas Jim Clark