In 1997, Chen Youxi, a girl adopted by the Jieshan Orphanage, escaped from the orphanage and came to Tanling because her friend Xiaoxiu disappeared mysteriously after working as a nanny for the Li family. She pretended to be Li Wenwen, the daughter of the Li family who had been missing for many years, and sneaked into the Li family to search for clues.With the help of Xiaoxiu's quasi-boyfriend Cheng Wei, and through multiple struggles and dealings with her mother Liao Suifang, father Li Chengtian, Liao Suifang's lover Wang Chongjiang and others, the secrets and sins of the Li family are gradually discovered.