A mystical detective agency was contacted by the director of Luna Park and thus a case called Scooby-Doo and Guess Who Funfair Scare was born. The director said that a ghost appeared among the rides in the park, which frightens visitors and makes the rides work when they want. Scooby-Doo with his master Shaggy and the rest of the detectives went to the scene to find and subdue the ghost. Help the heroes, they will have to find the keys to locked doors, because a mischievous ghost has hidden them. Don't forget to collect goodies for Scooby, he's never averse to snacking, including Scooby-Doo and Guess Who Funfair Scare.