Warnings

After finding a mysterious book in the library Twilight and her friends are called to Canterlot by Princess Celestia on urgent business. Once there the mane six find out that the book Twilight had found was reason for Celestia calling them. Now after learning about three alicorns from Equestria's past and faced with the threat of them returning. Twilight and her friends must find the three keys that will either keep them locked away or free them from the corruption that over took them.