Abandoned by Mummy and Daddy, 28-year-old brother-and-sister twins Presley and Haley are hollow-eyed poster children for arrested development. Subsisting on various forms of chocolate and sleeping pills, the creepy and unattractively pale duo lead a whiny, childlike existence – that is, until Cosmo Disney, a strutting cabaret performer, and his masked sidekick, Pitchfork Cavalier, enter their lives and expose them to the terror of the outside world.