The year is 2042. The first astronauts have landed on Mars. As the meaning of life and human achievement are being redefined, the four astronauts tasked with this mission each have come to Mars for different reasons - to grow, to escape, to prove themselves, and to survive. That is until deep in a Martian cave, they find a single human skeleton and four words written on the wall: "Never alone, Never enough." Now the crew must uncover who this was, how they got to Mars, and what that message meant for those of the past as well as the present. As the mission digresses, they must reconcile what it means to be alive with humanity's insatiable curiosity and hunger for progress.