When our mystery solving gang is driving in Japan, they are stopped by none-other than famous actor Mark Hamill. He's in town for a high school reunion, but a terrible Fox Monster has attacked the reunion and kidnapped one of Mark's favorite old teachers. From reliving high school rivalries to surviving haunted, abandoned temples, Mark Hamill and our gang must face a ghastly Fox Monster in order to not only save the day, but their own lives. From Warner Bros. Animation, Scooby-Doo and Guess Who? focuses on the Mystery Inc. gang as they solve bigger mysteries while also encountering many memorable celebrities and pop culture stars. United States/Korea, Republic of/Philippines 2020.