Rune Alexander wants to get through her days doing her job, which is protecting the humans against the myriad supernatural creatures, known as Others, who exist uneasily in a human's world. But she is unstable and damaged. She realizes how broken she is even as she continues to submit to the unspeakable things her lover does to her, craving desperately the strange peace she finds in the aftermath. When she discovers things are not as they seem and a faceless human is torturing the supernatural groups in her city, she and her crew must break the rules and begin to protect the Others from the humans. But as the darkness inside her becomes stronger and she ends up on the wrong side of a battle she must not lose, who will save Rune from herself?