After a single day and night of intense combat, the Archduchy of Mongaul has overwhelmed its refined neighbor, Parros. The surviving royalty of the fallen priest kingdom, the young twins Rinda and Remus, are hiding in a forest within the treacherous wild marshes. There, they are rescued by a mysterious being with a man's body and a leopard's head, who has awakened from a deep slumber and recalls only his name: Guin.