Over a thousand years ago a the Dark King conqured the Crystal Empire. But what happened before that event? What connection does Sombra have with Celestia?
After Celestia humiliates her at a dinner, Luna storms off and ends up snooping around in her sister's room. There, she stumbles upon the journal Celestia kept immediately after the banishment of Nightmare Moon.
It has been almost a century since Twilight and her friends had discovered their destiny, and Celestia has been wracked with constant regret over the fate she has condemned her friends to. Luna looks to those very ponies to help Celestia smile again.
Atop Chrysalis's decimated hive, King Thorax confronts his former peers. When their discussions are interrupted by a confused and scared changeling nymph, Thorax demonstrates the power of sharing love between changelings.
Celestia doesn't seem well these days. Luna decides she needs to have a talk with her sister to find out what's been bothering her. The reason why will change Luna's world.