Shen Wan, the daughter of the minister of Dali Temple, relied on her superb medical and forensic skills to join hands with Prince Yan Chi to solve unsolved cases and find the real culprit in order to vindicate her father.

For generations the two cities of Mu Xi and Xuanyue have fought each other, always trying to conquer the other. The old city owner of Mu Xi had only one daughter, Ye Zhaonan, whose gender he secretly concealed so she could one day inherit. From an early age, Zhaonan was always disguised as a boy, until one day when Ye Zhaonan fell off the cliff and met Liu Xuanming, the lord of Xuanyue City, and started a wonderful destiny.

Despite being enemies from different realms, Feng Ruoyao, the powerful demon queen falls in love with Mo Chenyuan, an immortal lord, and forcibly marries him. Mo Chenyuan, secretly in love with her, uses his injury as a reason to be captured and taken to the demon realm. Despite initial struggles, their mutual love and devotion help them overcome all obstacles, uniting the two realms and solidifying their bond.