Eighteen years ago, eight-year-old Chen Yutang witnessed the family maid, Liu Sisi, swap her newborn brother, Chen Yuzhou, with Liu's own son. Chen Yutang secretly switched them back. Now a renowned musician, Chen Yutang returns home to find her mother and brother completely deceived by Liu Sisi. Unable to convince them of the truth, she decides to gather evidence of Liu's treachery in secret. After Liu Sisi's affair with their father, Xiao Yunfeng, is exposed, the two are expelled. Believing Chen Yuzhou is their son, they plot to seize the family fortune during the inheritance ceremony. At the event, Liu Sisi and Xiao Yunfeng publicly reveal the "truth" about the baby swap, devastating mother Chen Chongzhi and Chen Yuzhou. But Chen Yutang turns the tables, revealing she swapped the babies back all those years ago. With a DNA test proving Chen Yuzhou is the true heir, the conspirators' plot crumbles, and they finally face justice.
