The Elements of Harmony have released a new evil into Equestria with the blame falling on Princess Twilight Sparkle. This unholy demon takes on the form of an alicorn and calls himself Gray Umbra. Gray plans to tip the scales of the natural order between chaos and harmony and it is up to Twilight and her friends to once more band together to save Equestria, this time from the One-winged Alicorn.