Scooby-Doo! The Mystery Begins. In Coolsville, Ohio, four teenagers are involved in a fight on the school bus, which causes the bus to crash into a flagpole, which falls on Vice Principal Grimes' 2007 Ford Mustang, smashing its windshield. Because of the fight on the bus and the damage to Grimes' car, the teenagers are sent to the library for detention. Norville "Shaggy" Rogers is a clumsy, geeky outcast, who tried to smuggle his dog Scooby-Doo onto the bus; Fred Jones is quarterback of the football team; Velma Dinkley is a science nerd; and Daphne Blake is in the drama club and very wealthy. They bond somewhat over a shared interest in mysteries, but quickly get on each other's nerves. Two ghosts suddenly appear and chase them to the gym where a pep rally is going on. A third ghost, The Specter appears, causing the lights in the building to flicker. He starts telling everyone to leave. The stamp-collecting Principal Deedle decides to close the school, but Vice Principal Grimes deems it a prank and suspends the quartet as he refuses to believe that there are ghosts in the school...