Jihyeon, a business consultant from Korea, ends up stranded in another world. She is rescued by the members of the Nio Mercenary Corps, only to find out that the unit is on the verge of bankruptcy. A passionate professional, Jihyeon cannot ignore their dismal financial state. To help the corps, and in hopes of returning home, she volunteers to serve as the corps's financial officer. Turning around a struggling mercenary corps is no easy feat, but Jihyeon and the corps members stick together through thick and thin. Her chance of going back home, however, remains elusive.