Scooby-Doo, Shaggy, and Scrappy-Doo are on their way to Miss Grimwood's Finishing School for Girls, where they have been hired as gym teachers.

Frightened by this, Shaggy and Scooby are initially hesitant, but they ultimately agree to stay as gym teachers as the girls take a liking to them.

Though Scooby and Shaggy fear being trapped in a house full of ghosts and monsters, the fathers are friendly and polite, and the party is a success.

A power-hungry witch named Revolta and her minion the Grim Creeper plan to kidnap the girls and make them her slaves.

The Cadets, having felt remorse for treating the girls poorly and respecting them for saving their lives, arrive in a pedal power helicopter and fly everyone to safety as Revolta swears vengeance.

Despite being well liked by all their students, Shaggy and Scooby run away in terror when new monsters – such as an alien, the Gill-man and Godzilla – enroll their daughters at the school for the following year.

A manufacture-on-demand Blu-ray was released as an individual title and as part of the Hanna-Barbera Superstars 10 boxset through Warner Archive Collection on February 20, 2024.

While Russi Taylor (as Phantasma), Susan Blu (as Sibella) and Pat Musick (as Elsa Frankenteen) reprise their roles, Natalie Palamides and Kristen Li (who voiced Buttercup and Bubbles from the 2016 Powerpuff Girls television series) took over for Winnie and Tanis respectively as Marilyn Schreffler had died and Patty Maloney had retired.