Admiral Jessica Lang has enforced the Empire's will for two hundred thousand years. She commands the Peacekeeper Astoria, a warship carrying four hundred thousand souls through a galaxy humanity has ruled for eight hundred millennia. She has never questioned her orders. She has never needed to. A routine patrol of the Selob system goes wrong. A rebellion armed with technology that shouldn't exist. A dancer named Erika who knows things no civilian should know. And a voice inside Jessica's mind that has been guiding her thoughts since before she can remember.

When the truth about Imperial conditioning surfaces, Jessica faces a choice that will define the future of twenty quintillion humans: remain the Empire's weapon, or become the first Admiral to break free. But freedom has a cost, and Admiral Ridivask - three hundred thousand years old and patient as the void - has been waiting for this moment longer than Jessica has been alive.