Count Dracula transforms Shaggy into a fuzz-faced werewolf and there's only one way he will change him back. Scooby-Doo and Shaggy must win a creepy cross-country race against a hot-rodding horde of sinister celebrity monsters.
Monster-obsessed Alvin is sure that the mysterious new neighbor is a werewolf, but the fun and frights really begin when Theodore starts acting strangely, too.