“I, the queen of Joseon, was murdered by a concubine?!” While taking an exam, Minju suddenly remembers her past life. Though quite flustered, college admission was more important than her past life, so she collects herself. However, her mortal enemy in her past life, the concubine, comes looking for her. With the appearance of her past husband not long after, Minju's exam life is thrown into a crisis. “I don’t care about my past life or anything related to it—I just need to study!"