Now isolated in a single frail human body, Breq, an artificial intelligence that used to control of a massive starship and its crew of soldiers, tries to adjust to her new humanity while seeking vengeance and answers to her questions.

Breq was once Justice of a starship in the service of the galaxy-spanning empire. But an act of treachery ripped it all away, leaving her with unanswered questions, and a burning desire for vengeance.