Keith, owner of Keith's Guild, offers Rance a job worth 20,000 gold in reward from the Bran family to find and protect their daughter, Hikari Mi Bran, who was kidnapped with no subsequent demands made. Assisting him in his search is Zeth-born caster slave, Sill Plain, who was also kidnapped from her rich family and sold to Rance in exchange for his life savings. Through separate means, they both work together to solve the mystery behind the kidnapping, and eventually discover that the case is much larger than it seemed to be.