Years have passed and the Mane 6 are dead when they are needed most. A young mare is tricked into letting a large horde of demons free. She now suffers a slight amnesia, she remembers the betrayal and what she had done, but her name is forgotten.
After a majority of ponies die, only a few remain. There was a war and it made it so harmony no long excisted. The only way to bring the land back to what it was and make Equestria whole, is for harmony to rule most of the ponies remaining.
RD, AJ and Rarity are lost in the Everfree Forest. With RD having a broken wing, no memory of how they got there, and somepony or something hunting them down, can they make it through the night alive?