Twilight Sparkle had been looking forward to a quiet, relaxing day with a friend, but when Twilight discovers Fluttershy's appetite for blood, the knowledge proves to be anything but relaxing...
Some names are respected. Some are ignored. Some are loved. There is only one name in the whole world of Equestria that became the synonym for cruelty. This name is Sombra, and this is his story.
With her new apprenticeship under Nightmare Moon, Empress of Equestria and Queen of the Eternal Night, the orphan filly Twilight Sparkle plunges head-first into the conspiracies, secrets and intrigues of the Empire.