When a Dangerous Rogue Changling causes troubles in ponyville, they unwittingly involve the mane 6 in events that could effect not just Equestria, but the entire world forever. In the midst of these events, Nightshade and friends, 3 changling deserters, find themselves joined by Twilight and friends in an epic struggle against not only the Rogue Changling, but a force that threatens the existence of all things good and harmonious, indeed perhaps the most impersonal and implacable foe that the land of Equestria has ever faced.

NOTE; My description has been giving some the idea that this story will be Grimdark. There are no intentions of this story being Grimdark. If the Lord of the Rings was too much for you, than maybe this is too, if not i'd say it'll be about on par with that as far as "Adventure Level"