Dong Zhulan, who has eyes with an exceptionally good memory, was spending her life in solitude as a sacrificial princess of the sea god. She is visited by a mysterious young man named Liu Fang.
As a condition for freeing her brother in distress, she was taken by him to Xiazheng City, the center of the country. She is then ordered to probe the unrest in the inner palace with Zhuolan's eyes. Although she is puzzled by the contact with people, Zhuolan is sincere in her efforts to solve the mysteries of the thefts in the inner palace and the cursed palace. Her efforts gradually change the hearts of Liu Fang and the other ladies, and she begins to win their trust. But the destination of all the mysteries is a secret that is related to the very foundation of this country, which must not be touched.