Monster High: Haunted

Spectra Vondergeist keeps slipping away from her friends at Monster High, and the ghouls finally follow her to find out where she goes. It is a Ghost World with its own all-spirit school, where Principal Revenant (Karen Strassman) has no use for visitors and keeps Spectra locked in detention chains. Dan Fraga and William Lau build the story around friends who take ghostly forms to reach her, so belonging means standing by the one who is different.