Zariah Rufus Legstrong is a man the likes of which the world has never seen. A man who truly does not give a single solitary f*ck. But when the planet is out of options after an alien invasion, Mr. Legstrong is our best chance.
This isn't really a story. It's part of a story, maybe the first chapter. There's no indication of it being part of something bigger, and so as-is the ending is abrupt and without resolution. It reads like it could be a bizarre sort of sci-fi humour book with a lot of potential for silliness, so it's a shame to not have a clue why it just... stops.