The hunter becomes the hunted as Yamabuki chases down the priest, turned ninja assassin. The chase leads her to a bandit fort in the high mountains where armies and mercenaries fight for spoils and power alongside of warrior-monks.
Helping Yamabuki in her pursuit is another woman warrior, young Tomoe, as well as General Aoi who is seeking vengeance and will stop at nothing to achieve it. In the midst of her pursuit, war erupts as Yamabuki finds herself taking the field in battle her original mission secondary. Her primary mission, now, to try to stay alive.