Scooby-Doo, Shaggy, Daphne, Fred and Velma are off on more outlandish adventures as the super-sleuths race to outwit everything from creepy clowns, to aliens, to an evil entity determined to destroy the world! The darkest secrets of their hometown of Crystal Cove, the "Most Hauntedest Place on Earth," are about to come to light, but will finally solving this mystery mean the end for Scooby-Doo and the Gang?