After an attack on the night of her 21st birthday, Aspen Rigby awakens within the walls of Division 27 - a clandestine organization part of a circle of central intelligence that is kept a secret from the outside world. While trying to adjust to her new life and fight off the demons of her past, she's also faced with the shocking realization that, with a target on her back, she needs to be careful where she puts her trust, as well as how she decides to fight at a crossroads.

A mix of myth and history in ancient Japan and a romance spanning centuries.