When Emperor Qianlong went to the south of the Yangtze River, he had a romantic relationship with Xia Yuhe at Daming Lake in Jinan. Xia Yuhe gave birth to a daughter Ziwei. Many years later, Yuhe died of illness. Ziwei and her maid Jinsuo took the token left by Qianlong and came all the way to the capital to find their father and recognize each other. However, they couldn't find the right person. When they were desperate, they met Xiao Yanzi who lived in a large courtyard. Ziwei and Xiao Yanzi got along well, became sisters, and told Xiao Yanzi the secret of her life experience. Unexpectedly, when Xiao Yanzi helped Ziwei find her relatives, she was mistaken for the emperor's daughter and was named "Huanzhugege".
Qianlong took Xiao Yanzi to a ceremony to worship heaven and reward the gods. The ceremonial guard passed through the market and was seen by Ziwei and Jinsuo. Ziwei was so shocked that she fainted and was rescued by Falkang. After the Fuji family learned about Ziwei's life experience, they took her in, and Ziwei and Erkang also secretly fell in love. With the help of Erkang and others, Xiaoyanzi and Ziwei sisters met, and Ziwei was able to enter the palace. Since then, everyone, including the fifth elder brother Yongqi, has made various efforts to reveal the truth about their life experiences. Xiaoyanzi and Yongqi also fell in love with each other in the process. In the end, Ziwei and Qianlong recognized each other, and the two lovers, Ziwei and Erkang, Xiaoyanzi and Yongqi, finally got married.
