Haunted by memories of Nightmare Moon’s unnatural darkness, a mysterious stranger has staggered into Ponyville, the grand city on its horizon guiding him forth on a grim quest to have Princess Luna answer for a terrible tragedy. Fate quickly entangles Twilight and her friends into its designs, and it may take the combined efforts of the Elements of Harmony to stop what could very well spiral into catastrophe. Can they conquer their own doubts and inspire a conflicted soul to give up on revenge? Or are the mistakes of the past destined to repeat?