King Sombra didn't want to die, but he knew he had to. He threw what was left of himself at the only thing that could kill him. But he saw something, the descendant of one of his students during his time teaching magic, Then he died.

His soul went to the void, where it would stay until the end of creation, with him his necklace. And as he wandered, something came to him, A light. It gave him a choice: stay in the void and feel no pain for eternity, or . . . return to the land of the living, but cursed for his past sins. He made his choice instinctively. . . .

A lone unicorn awoke on the streets of ponyville; alone and scared. . .

Meanwhile, secrets hidden by Celestia start to come to light during a time of confusion and recovery, and nopony knows how deep the rabbit hole is. . .

[note that this is part origin story, part WMG, you have been warned.]