Shortly after Princess Luna returned from her thousand-year banishment, she discovered that the species she loved, the bat ponies, are still alive, in the section of Canterlot overshadowed by the mountain that stands above it. She is saddened by the condition of the slums that the race are forced to live in. Wandering through, she meets a very special bat pony, who is willing to break the law valiantly just to protect three young souls from a life they shouldn't have to live.