A reboot of the iconic franchise "Scoob!" follows an origin story for Mystery Inc. and how they are joined by Dynomutt and Blue Falcon to solve their most challenging mystery: The origin of Mystery Inc.'s mascot in conjunction with Dick Dastardly's plot to cause a global "dogpocalypse" within the unleash of a giant three-headed ghost dog, Cerberus. Based on characters created by Hanna-Barbera Productions.