The Mega Mondo Pop Cartoon-a-Con in sunny California marks the spot for mystery in this all-new original Scooby-Doo adventure! Shaggy and Scooby-Doo stop gruesome villain Mr. Hyde.The Mega Mondo Pop Cartoon-a-Con in sunny California marks the spot for mystery in this all-new original Scooby-Doo adventure! Shaggy and Scooby-Doo stop gruesome villain Mr. Hyde.The Mega Mondo Pop Cartoon-a-Con in sunny California marks the spot for mystery in this all-new original Scooby-Doo adventure! Shaggy and Scooby-Doo stop gruesome villain Mr. Hyde.