The parents of Su Haoxue (the heroine), Zhao Tianyou and Su Zhirou, are Shadow Clan masters who protect the royal bloodline. When the current emperor was still the prince, he made great contributions to eliminating the rebellion. After the world was at peace, Su Haoxue's parents went to the north of the Great Wall and gave birth to Su Haoxue. However, when Su Haoxue was seven years old, his father Zhao Tianyou had to leave Su Haoxue and his daughter and return to the capital because of the royal decree. From then on, Su Haoxue and her mother depended on each other. When she was fifteen years old, Haoxue couldn't bear the pain of missing her mother again, so she secretly left Saibei and went to the capital to look for her father. In the capital, Haoxue met the suave prince Li Hongxuan and the gentle and elegant second prince Li Hongwen. From then on, the fate of the three people became entangled. However, due to the overt and covert fighting between the Queen's Party and the Imperial Concubine Party, Haoxue's relationship is destined to have ups and downs.