Queen Murong Qing, who was deposed and died tragically in her previous life, was reborn with the "Tongxin Mirror" and returned to the beginning of her wedding. This mirror can reflect the true feelings of others toward you, whether they are affectionate or vicious. She saw through the emperor's false feelings, the concubines' pretensions, and the courtiers' schemes. She took back her power step by step and supported the seventh prince who truly treated her sincerely. In the end, she killed her enemy with her own hands and became the iron-blooded poisonous queen who dominated the harem.