There’s a grand masquerade ball happening in Coolsville, and everyone who’s anyone will be there including the Mystery Inc. gang! But disaster strikes when the famous Coolsville Diamond is stolen during the festivities! With everyone wearing costumes and masks, the thief could be anyone at the party. It’s up to Scooby and the gang to search for clues, unmask the suspects, and catch the jewel thief before they disappear into the night!

Features all the classic Scooby-Doo villains like Creepy Keeper, Ghost Girl, Creeper, The Phantom, Que Horrifico, The Witch, Captain Cutler, Ghost Clown, the Black Knight Ghost, Snow Ghost, Krod, Old Danny Darrow, Vampire, Foog, Dead Justice and Fish Freak.