The Duke of Ning's family was full of loyal people, but they were framed. The only remaining young girl, Shen Zhiyi, was rescued by an old servant. She grew up anonymously in a small border town and acquired martial arts and medical skills. Shen Zhiyi rescued Xiao Jingheng, the seriously injured King of Jingbei, and discovered that he was the young general who served under his father, and now he has become the powerful God of War in the north. Xiao Jingheng brought Shen Zhiyi back to the palace. On the surface, she was a medical woman, but in fact, she was secretly investigating the unjust case of Duke Ningguo and found that there were informants from various forces hidden in the palace. During the investigation, the two discovered that there were royal secrets behind the defeat. Shen Zhiyi's true identity attracted the attention of many forces, and dangers followed one after another. In the process of jointly fighting against the conspiracy, the two souls who bear the hatred of their home and country gradually get closer, but they are unable to be honest with each other due to the disparity in status and numerous obstacles.
