Very good condition.

In the far distant future, the sun's premature expansion has irradiated Earth, sending humanity to the lowest depths of the seas, hidden with-in radiation-shielded cities, while probes scour the universe for inhabitable worlds. After tens of thousands of years, a single probe returns, crashing on Earth's surface, a now-alien place no human has seen for millennia. Now Stel Caine and her husband Joel, the last Helmsman of the once-great city of Salus, must rise from the depths of mankind's despair, and journey to the surface in search of salvation.