Scooby-Doo, Where Are You! The show focuses on four teenagers Fred, Daphne, Velma, and Shaggy, and their talking dog named Scooby-Doo, who travel in their van, named The Mystery Machine, bumping into and solving mysteries. Once solved, the group typically discovers that the perpetrator of the mystery is a disguised person who seeks to exploit a local legend or myth for personal gain