The monster is scared for the first time. Now, it must run from a predator of its own. Where does it run to? Ponyville, where many unsuspecting victims lie in wait. Sweetie Belle is sick with a fatal and incurable disease. Diamond Tiara is dead. The only pony who knows just what is at stake is on the other side of the Everfree forest. Twilight attempts to find out just what this thing is but her only clue is in a book of fiction. In all the confusion there is one thing that is for certain: it will take more than a few ponies to once and for all bring an end to whatever has come to their humble town.