Ned has been watching too many monster movies, and when he's left in the house alone, he's paranoid that there are monsters around the house. This isn't helped when his parents ask Uncle Frank and several friends of his to check on him, and they're all dressed as monsters, on his way to a costume party. Newton, after thinking about what killed all the monsters in the movies, decides to let the monsters fall to their death by jacking up the house and pushing them out the door.