Scooby, Shaggy and Scrappy Doo are on their way to a Miss Grimwood’s Finishing School for Girls, where they have been hired as gym teachers. Once there, however, they find that it is actually a school for girl ghouls.

When Santa Claus decides to retire and pass on his magic bag of Christmas surprises to a new Saint Nick, he enlists the aid of a hilarious assortment of characters. A perky teen runaway and hapless taxi driver Ernest P. Worrell must convince a skeptical kiddie-show host to take over the post of Father Christmas.