Two brothers, Ben and Clint, join a cattle drive from Texas to Montana. While heading for Texas they save Nella from the Indians, and she decides to ride with them. Ben and Nella start to get romantic, but Ben isn’t ambitious enough for her, and she soon meets up with the boss of the cattle drive. Will she make the right choice, and, more importantly, will the cattle make it to Montana !

A lone-wolf scientist sequestered in a mansion near a small desert town arouses the suspicion of the town’s doctor when his lab assistant is found dead from a case of acromegaly which took only four days to develop. As the doctor investigates, aided by the scientist’s new, and very female, assistant, they discover that, far worse, something much larger and hungrier than it ever should be, is devouring local cattle – and humans – in increasingly large quantities.