China's war ace, a fighter pilot nicknamed the Falcon Killer, is actually Bill Gaylord, raised in Peking by his American parents. Gaylord lost both of them as a child during the violent Boxer uprising and then saw his foster family slaughtered in wartime. With a past that's hardened his soul and given him nerves of steel, Gaylord has used his resolve to down more Japanese aircraft than can be counted.

When Tom Weston writes to his son with the news that his old enemy Harvey Dodge is back in town, Lee Weston loses no time in returning to New Mexico, only to find his father murdered and the family ranch burned to the ground. Certain that Dodge is the guilty party, Lee sets out for revenge but gets more than he bargained for when he's attacked by gunmen, wounded, and forced to flee to the mountains. The beautiful girl who comes across his unconscious...