One day the queen Ferio finds an unconscious young girl near the castle. The girl has lost her memory. In a terrible nightmare, she hears the voice of a demon lord, calling her "Fana". Beside this name, she cannot remember anything. Ferio asks her husband, the king Arc, to take Fana to a nearby city and to visit the archbishop, who might know more about Fana's past. The two are unaware of the grave dangers which await them because of this decision...