A New Mystery: Following a prologue that shows how Shaggy (Will Forte), Scooby-Doo (Frank Welker), Daphne (Amanda Seyfried), Fred (Zac Efron), and Velma (Gina Rodriguez) met and formed Mystery Incorporated, the film flashes forward 10 years as the gang is trying to find funding for their new base of operations. They are approached by potential investor Simon Cowell (yes, really), who refuses to fund the group after declaring Shaggy and Scooby inessential to the team. Soon after, the teenage hippie and his dog are attacked by a squadron of chainsaw-wielding robots before they are saved by the Falcon Fury and its inhabitants: Blue Falcon (Mark Wahlberg), Dee Dee Sykes (Kiersey Clemmons) and Dynomutt (Ken Jeong). Together, they are trying to find the three skulls of Cerberus (yes, that Cerber...