Twilight Sparkle and her friends have locked horns,(So to speak!)with Dragons, Hydra, Manticores, and even the mischievous Spirit of Chaos. With indomitable will, and the power of their loving bonds, it seems that no challenge is too great for these six ponies, plus one dragon.
But when the sky fills up with a single cloud that blots out the light of the sun, the residents of Ponyville become more than just a little bit concerned, especially when bizarre disasters begin to occur, and ponies start going missing! Can Twilight and her friends save Ponyville from something even worse than pure chaos?