Spit's alien pet Varch gets out of quarantine and joins the Brody household. Heather develops an instant dislike for the creature -- especially when the animal eats her new boyfriend, Ethan. The boy is rescued, but Heather is furious. Heather finds Varch in her closet and throws a shoe at it -- and she's surprised when he doesn't wake up. Satisfied, she thinks the troublesome critter is finally dead. It turns out that the animal periodically sheds its exoskin -- and the other kids have fun preying on Heather's guilty conscience before she learns the truth.