Nightmare Moon has returned to Equestria on the Summer Sun Celebration, and there was nopony to stop her. Now, in a world where the night lasts forever, it is up to two ex-students of Princess Celestia to fix it all.
Button Mash asks Sweeite Belle to a Winter Ball Dance at Canterlot, problem is he doesn't have the tickets. Meanwhile, Sweeite Belle learns a secert that has been kept hidden from her for years.