Shaggy is turned into a werewolf, and it's up to Scooby, Scrappy and Shaggy's girlfriend to help him win a race against other monsters, and become human again.
Scooby-Doo and the Reluctant Werewolf is a 1988 animated comedy horror made-for-television film produced by Hanna-Barbera for syndication as part of the Hanna-Barbera Superstars 10 series. It marked Scrappy-Doo's last appearance as a protagonist in the Scooby-Doo franchise to date; he would not appear in a Scooby-Doo production again until the live-action Scooby-Doo film as the villain in 2002. It is also the last appearance of Shaggy's outfit from The 13 Ghosts of Scooby-Doo until Scooby-Doo and the Cyber Chase.