Ryland Grace is the sole survivor on a desperate, last-chance mission - and if he fails, humanity and the earth itself will perish. Except that right now, he doesn't know that - let alone the nature of his assignment or how to complete it. All he knows is that he's been asleep for a very, very long time. Alone on this tiny ship that's been cobbled together by every government and space agency on the planet and hurled into the depths of space, it's up to him to conquer an extinction-level threat to our species. And thanks to an unexpected ally, he just might have a chance.