Ghouls whenever they bring their killer fashion! After Monster High's ghouls accompany Spectra Vondergeist one day, they detect that a creeperiffic Ghost World. However, their student bodies that are scary-cute are welcome with the very strict Principal Revenant, and she tickles Spectra with frightening detention chains which prevent her from rejoining Monster High. Now, it's up into this perfect friends to simply take on ghostly forms as a way to save one of their own from disappearing forever!