Vampires, Bats, and Scaredy Cats

Scooby-Dumb joins Scooby-Doo in "Vampires, Bats, and Scaredy Cats," in which a birthday party at Great Skull Island takes a sinister turn. When a vampire turns the birthday girl into a vampire it's up to the Scooby-Doo gang to return the guest of honor to her rightful state before the festivities commence.