After a kilometer-sized comet hit, the whole earth was covered in slippery-smooth ice. Now if you take one wrong step, you'll end up flat on your back. All the old money became worthless—now momentum is the only currency. Collecting all those old-earth seeds might be the only way to have a future worth living in. You'll do anything. It's not that you won't stop; you can't stop. You don't know how.