Gus and his friends are heading through Pennsylvania for a football game—until a detour takes them off the interstate and through spooky rural countryside. They reach the small community of Holstein Hollow, where the roads are blocked off and there are no signs of life except for sad-looking livestock. When asking for directions, Gus encounters something impossible: an anthmorphoric cow-person who tells him he doesn't belong here. While trying to escape, they're cornered by similar cow-people dressed as cops.

What they've found is a secret in the middle of nowhere, as the town's leader, Cookie, explains. Cows used to be an advanced species. They conquered space travel long before humans stopped living in caves. And now a certain few who remain on Earth have sinister plans for those that enslave and eat their distant bovine cousins.

It looks like Gus and his friends are going to be suitably transformed for life in a pasture...