A mist is overcoming Equestria, ponies caught inside disappearing mysteriously. One by one ponies began to disappear, starting years after Rainbow's older sister disappeared. Even the princesses weren't safe from the attack. With no one to fight with, but SPike, Zecora, and the Mane Six pets, will she manage to find the source of the disappearences? Zecora speaks of the mist being a new threat, and a living being.

(I had no title at the time, but i found a very interesting pic for a cover which will be up sometime.)