大明湖
In the year 1759, 17-year-old Xia Ziwei and her maid Jinsuo travel from Jinan to the Qing Empire capital Beijing, in an effort to meet her father, the Qianlong Emperor, for the first time. Qianlong Emperor had a relationship with her mother Xia Yuhe during a trip to Daming Lake, Jinan 18 years ago, and Xia Yuhe had held the secret away from Ziwei until her recent death, before which she told Ziwei to seek her father. Unable to enter the Forbidden City, Ziwei and Jinsuo meet adventuress Xiaoyanzi, also 17, at a wedding. An orphan since a young age, Xiaoyanzi lives with siblings Liu Qing and Liu Hong in a dazayuan (residential compound). The two girls become sworn sisters, and Ziwei informs Xiaoyanzi of her mission.