Teenage superheroes strive to prove themselves as members of the Justice League.
When Grouchy Smurf behaves badly to everyone and refuses to celebrate Christmas, the Smurfs of Christmas Past, Present and Future teach him to appreciate Christmas.
After 52 years of solving mysteries, the Scooby gang reunite at Warner Bros. Studios to reminisce about their favorite cases and how they were filmed. But it turns out that the back lot may have its OWN monster problem. Fred, Daphne, Velma, Shaggy, and Scooby-Doo investigate this mystery while celebrating the legacy of the franchise.
