In his hilarious new sci-fi series, Jim C. Hines introduces the unlikely heroes that may just save the galaxy: a crew of space janitors. The Krakau came to Earth to invite humanity into a growing alliance of sentient species. However, they happened to arrive after a mutated plague wiped out half the planet, turned the rest into shambling, near-unstoppable animals, and basically destroyed human civilization. You know--your standard apocalypse. The...