Rance accepts a lucrative contract from the Bran family to locate their missing daughter, Hikari Mi Bran, after she vanishes without any ransom demands. Partnering with Sill Plain, a mage from Zeth who was similarly abducted and bound to him through a considerable debt, Rance pursues multiple leads to unravel the circumstances of her disappearance. As their investigation deepens, the pair uncover evidence suggesting the kidnapping is connected to something far more sinister than a simple ransom scheme, drawing them into a conspiracy with ramifications beyond the initial case.