Peace never lasts long in Ponyville. A day beginning with relaxation, party planning, and plenty of research into ancient history soon turns south with the disappearance of Discord and the arrival of a mysterious mare devoid of emotion bearing a dire message for the Princess and her friends.
An ancient being is about to awaken, threatening all of Equestria. Will the Elements of Harmony be able to stand against this new threat, or will they fall just as she did?