Part one of a trilogy that summaries how I would end the show were it up to me.
When the Cutie Map summons the Mane Six to Canterlot, they soon learn Celestia and Luna are rifting yet again. However, the cause is more deadly than last time; Twilight soon learns that there's much more to the pair's past than she knows; and what they've been hiding for so long may destroy Equestria!