Hopi deputy investigating mysterious cattle mutilations. Initially dismisses medicine man Abner's apocalyptic warnings, but later suspects a supernatural link. Teams up with Philip Payne and Anne Dillon to track and destroy infected vampire bats threatening the reservation.
Abner raised Youngman as a guardian figure after his biological parents passed away.
Walker serves as the tribal chairman while Youngman acts as a deputy under his authority.
Anne harbors unrequited or developing romantic feelings for Youngman.
Piggott's corporate ambitions indirectly create the environment that forces Walker to obstruct Youngman's work.
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