Rance Roden plans to kill off all the buffalo and thus cause the Indians to riot. After they destroy the US Cavalry, Rance and his gang will take over the West. Meanwhile, a Boston magazine gets wind of the buffalo slaughter and sends editor Kenneth Cabot and his associates to Casper, Wyoming to investigate.
Annie Oakley

Mort Mills
Trigger Mortis
Don Lamond
Rance Roden
Rex Holman
Sunstroke Kid