Five-year-old Chen Mo encountered the nanny Wang Ma in the hospital exchanging the Song family's newborn baby girl, and secretly exchanged the real Song Zhiyi back without telling the adults. For many years, Wang Ma treated her biological daughter Wang Ruyin harshly, trying to let her replace Song Zhiyi and have a wealthy life. At the engagement party between Song Zhiyi and Chen Mo, Wang Ma exposed the secret of the child exchange in public and wanted to steal the wealth. Chen Mo took out a paternity test and revealed the truth about the child he had when he was young. In the end, Gu Bai's business went bankrupt, Wang Ma became insane, Wang Ruyin decided to leave, and Song Zhiyi still had her own life.
