Humans cannot live forever, but some refuse to give up. Some turn to higher powers, some pretend, and some merely evolve.
200 years ago the moon fell apart and the world ended. 200 years ago the world split into several fractions-Gunslingers, Holy Freaks, and Lures.
Cheyenne was supposed to die 200 years ago. She never did. After so long you would think she'd have grown up a little, but she's still trying to be better. She still wants to be better than humans. Better than Gunslingers, better than Holy Freaks.
Better than the Hunters.
*btw I know this book isn't as good as it could be, but I really liked the idea :) *