Humanity is gone but for one city, kept safe from the toxic outside world. Oxygen is scarce after curfew. You don’t want to be stuck outside after dark.
Before the age of reason and science, magic ruled the world. Now, it’s coming back and if most of humanity gets wiped out in the process....well, sometimes you have to break a few eggs.
In a space-faring future, an alien war criminal seeks vengeance on humanity, and a celebrated-but-bumbling hero is forced back into action... whether he likes it or not.