When you have lived as long as Celestia and Luna, things are bound to go wrong. Sometimes it can take a thousand years or more for the repercussions, but they always will. Twilight, Applejack, Rarity, Pinkie Pie, Fluttershy and Rainbow Dash must help the two princesses overcome these repercussions, before all of Equestria is swallowed in darkness. Without the Elements of Harmony to protect them, will they succeed, or is there simply too much to fix?