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, Shaggy and Scrappy are on their way to a Miss Grimwood's Finishing School for Girls, where they've been hired as gym teachers. Once there, however, they find that not only is it actually an all-girl school of famous monsters' daughters but there's a villainess out to enslave the girls.
After the death of Shaggy's Uncle Beaureguard, he, Scooby and Scrappy arrive at the late uncle's Southern plantation to collect the inheritance. But as soon as they arrive, they find it is haunted by the ghost of a Confederate soldier. With this spook on their tails while they solve riddles in search of the inheritance, they seek help from the Boo Brothers, a trio of ghost-exterminators to help catch this nasty ghoul.
