Zheng Nanzhen (played by Jiang Shouyan) has noble royal blood flowing in her body, but she was adopted by an official's concubine by mistake, and therefore suffered endless exclusion and ridicule. Ji Shang (played by Park Sangmin) is Zheng Nanzhen's childhood playmate. There is a sincere relationship between the two. However, this relationship is hindered by others and the two go their separate ways. Zheng Nanzhen was caught up in the dramatic changes in the court and had no choice. In the end, she decided to dominate her own life and married Yin Yuanheng (played by Lee Deok-hwa) and was willing to be his concubine. Yin Yuanheng's sister (played by Qian Renhe) joined the royal family and rose all the way to become Queen Munjeong. Zheng Nanzhen joined forces with Queen Munjeong and became her right-hand man, helping her get rid of Jingbin (played by Du Zhiyan) and other people who hindered their political path. Finally, she stood firm in the court and regained everything she had lost.