After a failed April Foals spell, Princess Celestia's most hidden side of herself is unleashed, and begins wreaking havoc all across ponyville! Can Twilight and her friends stop this before it gets out of control?
But as dragon sightings in Equestria begin to arise, history of the purple one is revealed, unravelling a 1000 year secret which Celestia has kept fom young Twilight and Equestria for as long as she has ruled. What is Spike and Twilight destined for? Why are dragons coming to Equestria? And who is Harmony?