While on the trail of the Chief Blackwing's killer, Tom Morgan (Tom Mix) finds a clue that leads him to Zaroff (Charles Middleton). Of course, Zaroff has his own plan to frame wealthy landowner Emil Janss for the murder. Meanwhile, Zaroff finds an even better use for the "Firebird" drone plane than terrorizing the Indians--namely, murdering Tom Morgan! (1935 - Mascot Pictures)