Once again, Equestria is under attack. When Nightmare Moon brought on nighttime eternal, it seems that was the last of the darkness. However, the legendary Dark Ponies - physically superior counterparts of the ponies - have gained the upper hand when Nightmare Moon declined. Now it is up to the ponies to summon a greater power than the Elements of Harmony (as they will be defective) and circumvent them with an ancient power Pinkie Pie has been empowered with, thus putting an end to the darkness once and for all. Can Pinkie Pie - the most boisterous and party-crazy pony in Ponyville - be trusted with this journey? Will Twilight find out where she has heard of the Elements of Harmony prior to her transportation to Ponyville for the Annual Summer Sun Festival?