Scooby-Doo and Shaggy's favorite holiday is upon us! With fake monsters and candy galore - Halloween is heaven for these hungry foodies going door-to-door. But, this year, their sweet ... Scooby-Doo and the gang team up with their pals, Bill Nye The Science Guy and Elvira Mistress of the Dark, to solve this mystery of gigantic proportions and save Crystal Cove!