One thousand years ago there were six pony races: The Earth, the Pegasi, the Unicorns, the Crystal, the Shadhavar... and the Dragonponies, the Longma. With bat wings, draconic eyes, and reptillain frills these creatures were told about in myth and legend as tricksters and monsters. The demonic minions of the bogeymare Nightmare Moon. But this lost race has returned, a menacing force appearing far to the north. Twilight Sparkle decides to investigate and ask the Princesses about the details, but she soon finds herself responsible for an empire of monsters, worshipping Twilight as the successor to the Mare in the Moon. How will she handle the pressure?