When Princess Celestia is supposedly kidnapped, it's up to the mane 6 to save her. What Luna dosent realise, is that the sun can't be raised by her, and thus the world if Canterlot is plunged into darkness.
Taking advantage of this, a clan called 'The Void Warriors' begins to attack Canterlot, and attempt to stop Rarity, Dash, Twilight, Pinkie, AJ, and Fluttershy from reaching the princess, who's all the way over in 'Las Horseless', which it literally is. When the group venture over to the abandoned city, they meet a danger they never thought existed…An enemy too great for them to face.

Contains RarityDash shipping, and human ponies (NOT equestria girls designs)