Equestria is under siege by the Changeling Hordes once more, this time under the command of a dangerous and powerful new master. The Elements of Harmony are nowhere to be found, and Canterlot itself has been taken, the princesses of the sun and moon captured. Apollo Sparkle never asked to be a hero, but after stumbling across an alicorn mare by the name of Piper in the midst of a battle ravaging Manehattan and getting swept up in a world of changelings, challenges, and danger he just may end up as one. Teaming up with new friends and allies to face off against foes he's only heard of in storybooks, and being pushed to the limit time and time again, Apollo will learn more about trust and friendship than ever before, and even a little about himself along the way.