As a child, Loran came to the Heptoarchy Empire as the daughter of an Eastern sorcerer and was raised as a noble lady. But one day, her fiancé suddenly announces their engagement is annulled— and she is falsely accused and thrown into prison!! To avoid being reduced to a slave, she begins plotting ways to make enough money to buy herself at her own auction. Using a certain hint she discovers in jail, Loran starts earning a fortune—!?