Twelve billion metric tons of asteroid. One girl who can save Earth. No margin for error. For war hero Caitlin Taggart, mining work on the Moon is usually dirty, low pay, and risky. But no risk seems too extreme if it can help her return to Earth as well as the daughter she loves a lot more than lifestyle itself. Offered a dangerous, long-shot chance to realize that desire, Caitlin will gamble with more than simply her life. By leading a ragtag team of miners on a perilous assignment to harvest an asteroid, Caitlin could earn a small fortune. More importantly, it could give her clearance to come back to Earth. But when an unexpected catastrophe strikes the mission, Caitlin can be plunged into a competition to save not merely herself, but every human being on Earth.