Cavalry officer Major Lee Stuart, stationed at remote Fort Torando, barely escapes with his life when his entire troop is massacred during a desert sortie by a hostile hoarder headed by the mysterious renegade 'El Falcon.' But when Lee Stuart returns to his base, his commanding officer accuses him of deserting his men and publicly brands him a traitor. Stuart takes destiny into his own hands and, to avenge his reputation, sets out on a single-handed search for 'El Falcon,' little knowing that the brutal leader is intent on wiping out the entire U.S. Army forces in Texas and giving back the hard-won territory to Mexico.