Fan Casting James Gunn's SCOOBY-DOO RETURNS

This movie takes place twenty years after the events of "Scooby-Doo 2: Monsters Unleashed." Even though they're approaching middle-age, the Mystery Gang is still solving mysteries. Although, one of the members might think about retiring. Fred and Daphne are married and have children, Velma has published successful mystery novels and is her own boss in a laboratory. Although, she doesn't have a soulmate yet (because she had her heart broken a few times, and she might be questioning her sexuality), Shaggy and Scooby are running a successful food truck business (every now and then, Shaggy might be "stoning"). He's still easily scared, but would do anything for a Scooby Snack. Fred and Daphne's kids discover something strange going on at their school. Students are seeing ghosts, and a teacher has gone missing. The kids have some of their parents' mystery-solving genes and by instinct, they decide to solve the mystery and not tell their parents (because they are VERY overprotective of them, and don't want them to become cocky as they used to be). A couple of their friends join the mystery. With help from "Aunt Velma" and "Uncle Shaggy" and, of course, Scoob, the kids find out that this mystery might have something to do with multiverse travel and revenge on their parents. Can the mystery be solved? And who will be unmasked? The other two live action movies were originally going to have a darker tone with "PG-13" content, like Shaggy being a stoner.