Nantao is a carp who can cultivate human nature after thousands of years of practice.
One day, the daughter of the prime minister's palace accidentally fell into a pond and died unfortunately. But Nantao's soul entered his body and survived instead of Prime Minister Qianjin Jiang Miao.
Jiang Miao's beloved eldest son, Qiao Si, is a dandy who goes everywhere to drink and spend time in flower houses.
Nantao, who lives in Jiang Miao's place, wants to stay as far away from him as possible, but she doesn't expect that this will attract Qiao Si's attention, and she stalks Jiang Miao every day, saying that she wants to marry Jiang Miao.
But when Nantao really fell in love with him and agreed to live and die with him, she found that Qiao Si had never been sincere from the beginning...