Isogashii is an ancient city ruled by the mythology and religion of the Great Dragon Lords. When two of the most unlikely partners meet the story begins. Kohana dreams of great things for herself and like most girls her age wishes to find out who she really is. Xiapher is a warrior disinterested in connecting with people. She lives day by day without any knowledge of her own past, or any interest in it. Xiapher, following a gut feeling, takes Kohana on as an apprentice. A series of events occur that lead the women into discovering a mystery that is being hidden from the cities people by the newly instated religious leader, they quickly become a target for his anger and flee the city. But they are being followed by an incredibly dangerous foe, who could ultimately challenge the country's religious beliefs and change the way Xiapher understands her past forever.