When teen Sarah is forced to babysit her half-brother Toby, she summons Jareth the Goblin King to take him away. When he is actually kidnapped, Sarah is given just thirteen hours to solve a labyrinth and rescue him.

En mislykket karnevalstryllekunstner, den utrolige Krudsky, stjeler lysmagi fra prinsesse Willow. Nå er det opp til Scooby-Doo og gjengens hans å stoppe Krudsky før han forvandler alle til Halloweenmonstre.

Underlying disorder in Jared and Amy's relationship comes to a head when Jared becomes monomaniacally obsessed with going Goblin Mode.