Luke is minding his own business when he encounters a stranger who gives him a card that will change the fate of the small town of Pucklebirch forever. Luke thinks he's been poisoned as his body undergoes a dramatic change into a beefy hunk of muscle and virility. Though concerned about his well being, his girlfriend can't resist Luke's new form and unwittingly starts a chain reaction that dooms herself, their friends, and their neighbors to a new life of sexual exploration.