Tarzan and the Winged Invaders

For days, Tarzan found half-dead natives, the blood drained out of their veins. At first suspecting a secret voodoo ceremony, he soon discovers a reason even more horrible and fantastic — a race of highly-developed mutants, requiring a plasma nourishment, who return from the far future via time machines. Against this super intelligence, Tarzan pits his great apes and jungle cunning to save his captive wife, Jane, and the rest of our planet's inhabitants.