When Spectra Vondergeist goes back to her old ghost school to find out why Monster High is being haunted, the other ghouls use Boogey Sand to change into ghosts so they can follow her. There, they discover that the spirits are downcast because the principal oppresses the students with horrible rules and chains of detention. It's up to the ghouls and their new ghost friends to unravel the mystery of the haunts and the secrets of the ghost school!

I'm sure if I were a teenager I would be super passionate about this franchise, everything I love, quirky girls and clichés and little monsters, a cute horrifying horror... Actually, the animation didn't conquer me so much, I recently watched the movie and I was enchanted , I love it, the animation is very childish, and some moments are very silly, the few parts that I managed to concentrate on...