Sixteen hundred years ago, they fled Earth. Now their long journey may finally be at an end. None of them have ever walked on soil, felt rain, or breathed unrecycled air. Their resources nearly spent, they sent a last exploratory mission to a new planet. It's ideal... but they are not alone. In the struggle for survival, they must make a choice. Sacrifice another species or accept their own extinction. And time is running out.

The Keseburg once boasted a complement of fifty thousand. Generations of hardship, space hazards and disease have whittled it down to just under thirty thousand. That was the number when a small crew of resource miners departed on a routine asteroid run three months ago. But when they return home to the ship, all traces of their friends and family are gone. The Keseburg is silent, adrift, and running out of fuel. As they search the massive ship for survivors and answers, something else stalks them. Something that does not belong on the Keseburg.

Out of fifty thousand, only thirty-three survived the Keseburg and the alien AI called Issk'ath. Hurtling toward an unfamiliar planet with few supplies and no preparation, they believe they are the last of humanity. But Indra, trapped inside Issk'ath's colony, knows better. What she uncovers of the Keseburg's past forces her to confront the lies that governed her entire history. Her thirst for justice leads the colony down an ever darker path that risks them all. Issk'ath must make a Betray its directives to save them and face its own termination, or help Indra get the justice she is bent on and risk Earth, itself.