During World War III, the American government initiates a secret project codenamed �Army Bacon� in order to create super soldiers by inbreeding humans with pigs. 25 years later the hybrid Muzzles have occupied the top of the food chain, eating and farming humanity. Ex-bounty hunter Rob Justice works for the last line of human resistance – a group of survivors hiding in a nuclear bunker deep underground – and his mission is to search and destroy Muzzle Central.