The scumbag fiancé was with the heroine behind her back, and tried every possible means to scheme against her. After the heroine found out, she broke off the engagement and entered the palace for a draft, making the emperor fall in love with her step by step. She took revenge on the scumbag fiancé and her sister and became the queen. Later, she assisted the new emperor, worked for the people, and eventually became a legendary queen mother.
