As children, Mick and Adrian forged a promise as they looked up at the stars. Time and money pulled them apart with harsh words and bitter regrets, and their wish was cast aside.

Now, space is a haven for the wealthy, who flaunt their riches aboard the opulent Empyrean Station, dining on crab with a spectacular view of Earth and enjoying a permanent vacation in one of Empyrean's many temperate biospheres. The stars are a long-forgotten dream to starship mechanic Mick, who lives in the Old New York shanty town swallowing his remorse as he struggles to meet his basic needs.

Until Adrian returns to him with heart-rending news—he's terminally ill with Miasma, a pollutant-driven, degenerative illness. With Adrian only having months to live, Mick realizes nothing matters except loving him and reaching for their dream together.

Stealing a spaceship, they launch into space to see the stars with their own eyes. Mick and Adrian end up embroiled in miracles and tragedies as they fathom Empyrean's true nature and face down those who would do anything to survive the coming apocalypse—except solve the problem.