What brings best friends together? For Daphne, Velma, Fred, Shaggy and Shaggy's spunky pup Scooby-Doo, it's a mystery! The feature-length live-action Scooby-Doo: The Mystery Begins original movie takes you back to when four teenage sleuths (plus one dog detective) first met. Unjustly accused of staging a spooky practical joke complete with ghosts, the kids are suspended from Coolsville High.