Every thousand years or so there is a mandatory meeting of all "immortal" beings of Equestria so they can share their stories, tell of loved ones past and, know they aren't alone in this immortality business. Twilight Sparkle has been invited and is curious as to who all would be there. Discord's just happy to finally get to go to one. Princess Luna's relieved to see that some traditions never die. Princess Cadence is perplexed by the hole idea. Princess Celestia is just hoping it goes well. And of course the pony that usually plans the event has been going through some changes lately.
Yes I am using the fannon character of Doctor Whooves.

Feel free to skip any story you don't like, I won't mind