After her husband passed away unexpectedly, Chen Mo raised Xiaoyu, an orphan girl left by his sister-in-law, on his own. He spent five years doing everything he could, from changing diapers to accompanying him to study for the college entrance examination. He regarded himself as the child's father. But when Lin Wanqing returned from abroad with huge wealth and a new family, she suddenly demanded to regain custody - "The child's surname is Lin, and he should not be a helper in your family." Chen Mo responded with silence until Xiaoyu cried and shouted in court: "I only recognize Chen Mo as my father!" A storm that tore apart the family relationship revealed the truth that had been buried for many years: Is Xiaoyu Lin Wanqing's biological daughter?