They'd ruled the Isle of the Lost. They'd ruled Auradon, as "heroes". And now, they'd rule this nameless land the way they wanted to, with Death and Conquest and Pestilence and War. The pattern had come true, just as Minerva had predicted. They'd rule from their palace of blood and iron and poison, and they'd be great.

153 years old, long after the defeat of the greatest Dark lord of all times, Harry Potter divorcee is alone and depressed. Contemplating suicide his familiar finds a way for him to go back and fix what he regrets not doing the first place.