A genetically altered coyote has led his pack into Greer Valley. There the Greer clan has lived in isolation for the past century and one half. The Big One studies the humans and hunts their sheep and cattle before moving his pack to the Sierra Nevada. Unfortunately, one of the clan's giant sheep dogs kills The Big One's mate and pups. What follows is a fight to the death between the Greer Clan and a giant coyote with super normal powers.