In a spooky and fun adventure, Scooby-Doo and the gang embark on an unexpected journey when they receive an invitation to visit a peculiar school for supernatural creatures. The school turns out to be an exclusive boarding school for ghouls and other supernatural beings, where young monsters are taught about life in the human world. However, what starts as an educational trip quickly turns into a terrifying mystery when they discover that a threat lurks in the shadows.
The headmistress of the school, kind and somewhat eccentric, is worried about the mysterious disappearances of students that coincide with the arrival of the gang. With the help of students like the sweet Vampire and a somewhat clumsy teenage Werewolf, Scooby and his friends must unravel the reason behind these dark events before the school closes its doors forever.
As they attempt to solve the mystery, they encounter classic monsters like mummies and zombies, and amid laughter and scares, the gang learns the importance of friendship and acceptance. With cleverness and a bit of fear, Scooby and Shaggy, always ready for a good meal, will devise a crafty plan to catch the villain and save their new friends. In a conclusion full of surprises, this hilarious movie reminds us that, whether in the human world or that of the ghouls, there will always be room for fun and adventure.