When the aspects joined forces to obliterate their once brother, a small fragment of uncorrupted essence remained. Merely a fraction of a percent of what was once strong enough to destroy worlds, it is banished to give both Azeroth and their brother a second chance at life. In Equestria, in the body of a whelp, the ex-aspect Neltharion is truly awake for the first time in thousands of years, realizing just how far you can fall before hitting bottom, and how hard the climb back up will be.