The mane six ponies take a journey to remove a dark curtain appearing, as far as we know, from no-where. Throughout the beginning of the story, the narrator is partially unclear, although there are some hints as to which pony it is. During their journey the girls must seek princess Luna and ask her her role in the darkness, after giving all of her knowledge on the topic to Twilight, the girls continue on their way. Dashie tries to break it using a crazy slingshot type move, and after returning to the ground, the narrator notices a crack in the dark where a tiny sliver of light is shining through. Somepony decides to have a rave type party while a large number of pegasi fly by to make as much vibration as possible. After everything falls into place, the darkness is shattered, and there is light again in the world, but they couldn't figure out what the source was. (May do a sequel, not sure)