Teenage superheroes strive to prove themselves as members of the Justice League.
Join Scooby-Doo, Shaggy and the Mystery Inc. crew as they head to Chicago for Talent Star, a hit talent show in which Fred and Daphne are finalists with some high hopes. Unlucky for them, the competition is frightful as the show is being broadcast from an opera house with a history of horrors and a particularly vengeful phantom that has cursed the show's production.
A relaxing spa getaway evolves into a prehistoric panic when Scooby-Doo and the gang uncover the horrible Phantosaur, an ancient legend come to life to protect hidden treasures buried in secret desert caves. But this scare-a-saurus doesn’t stand a chance with Shaggy around, after he finds his inner hero with the help of new-age hypnosis. Like, it makes him more brave and less hungry!
