Astronaut Ryland Grace wakes up aboard a spacecraft, unable to remember who he is or his mission. Gradually, he comes to the realization that he is the sole survivor of the crew sent to the Tau Ceti system in search of a way to save Earth from a catastrophe. In search of answers, Ryland Grace must rely on his extensive scientific knowledge, ingenuity, and willpower, but perhaps he won't have to search alone.