In the twenty-third year of Yong'an, the eldest princess Zhao Huazheng of Dayin went to Beiliang to get married. On the way, she met Su Ning, a Liangzhou woman who looked exactly like her, and the two got married. After Zhao Huazheng married Northern Liang King Tuoba Lie, he was murdered by him, his counselor Li Mo, and the eldest prince Tuoba Hong. Su Ning avenged her sister and sought out a miracle doctor to return to the Northern Liang Palace in the form of Zhao Huazheng. Su Ning, with the help of Beiliang Zhenguo general Qin Yue, dealt with the villains. It happened that the Prince of Dayin, Zhao Che, went to Beiliang in the name of condolences. Su Ning's identity gradually became known to Zhao Che, and the two teamed up to collect evidence of Tuoba Lie's crime. During the process, Su Ning met and got to know each other, Dayin General Xiao Jingyuan, and their love gradually grew. Lin Jingyuan always protected Su Ning and helped him resolve many crises. At the Beiliang Heaven Sacrifice Ceremony, everyone exposed Tuoba Lie's crimes and put down the civil strife in Beiliang. However, they discovered that the second prince of Dayin, Zhao Yu, had colluded with Tuoba Lie to rebel. Zhao Che, Su Ning, and Xiao Jingyuan led their troops back to Beijing to quell the palace rebellion. After Xiao Yu was brought to justice, Su Ning's identity and achievements were recognized by Emperor Dayin, and she was pardoned and stayed with Xiao Jinyuan. After the marriage, the two joined hands to assist Zhao Che in governing the world. Su Ning always remembered Zhao Huazheng and protected the peace between Beiliang and Dayin for many years. After the test of life and death, the two never changed their original intentions and finally achieved a happy ending of staying together for life.
