Fantasmia

Fantasmia is a realm hidden beneath the valleys where colorful ghosts and phantoms hypnotize, and possessed humans to dance. Instead of haunting people, they hypnotize them to join them in synchronized dances. Some of the humans do not like that the phantoms and ghosts control them all the time, but others have accepted and some have even become half–phantom creatures called morphlings. This kingdom is beneath all of the valleys while the humans live on top of the mountains.