Shen Wantang, the daughter of the general who ruled the country, and Xiao Jingheng, the young emperor, were childhood sweethearts. They married into the palace and became the queen. However, because the queen mother was afraid of the power of the general's palace, she framed her for murdering the third prince, and was deposed and sent to the cold palace. In the cold palace, Shen Wantang was bullied, but found out that she was pregnant. She endured the humiliation and secretly collected evidence for the sake of her child. At the same time, she discovered that Xiao Jingheng actually knew her grievances, but had to alienate her in order to weaken her relatives and consolidate imperial power. Later, the Queen Mother used some excuse to destroy the General's Mansion. Shen Wantang was completely desperate and decided to take revenge. She used her martial arts and previous connections to unite the old ministries in the palace and Qingliu in the court, step by step to expose the Queen Mother's crimes and regain power. Only then did Xiao Jingheng realize that he had lost the person he loved most, and tried to save her, but Shen Wantang was already disheartened. In the end, Shen Wantang overthrew the Queen Mother, but refused to return to Xiao Jingheng and chose to leave the palace with her children, leaving Xiao Jingheng to die alone.