While shopping for Shaggy's birthday present, Scooby-Doo and the gang make the acquaintance of a security robot as they work to solve a burglary in the department store.
Scooby and his friends are up against one of their spookiest frights ever--the Headless Horseman. Has the legendary figure come to life? Scooby and Shaggy are scared out of their wits but the gang knows they can't lose their heads.
Scooby and the gang watch a checkers champ face off against the computer when the computer suddenly comes to life, and now the group has to expose the culprit before it's too late.
Scooby-Doo and his friends in Mystery, Inc. stumble upon a new mystery at a construction site after they discover an ancient book of spells and a sinister sorcerer.