The dirt of the house has compiled itself into the Lint Monster and Bronson is heading for a showdown. Meanwhile, Fay jostles with the idea of telling the family about the baby, unaware the kids already know.

At a flea circus, a rare Transylvanian flea named Count Dracumite sinks its teeth into Pete, turning him into a werewolf at night. Not only is he in love with Fiona's dog, but Pete may have to stay that way.