There’s something strange about Walter Kopple’s farm. At first it seems to be his grandson, who cruelly murders one of Walter’s pigs in an act of seemingly senseless violence. But then people in town begin to whisper that Walter’s grandson heard a voice commanding him to kill. And that the voice belongs to a most peculiar creature: the pig named Pearl. Walter is not sure what to believe. He knows he’s always been afraid of the strangely malevolent Pearl. But as madness and paranoia grip the town and the townspeople descend on Walter’s farm with violent wrath, they begin to discover that true evil wears a human face.