After her mother burned her household registration book at the funeral, Chen Yan realized that she had never been treated as a family member. He put away the ashes in silence, turned around and began to trace the truth about his biological mother Lin Suyun's escape from marriage thirty years ago. The grandmother's hospital bed, the stepfather's business trap, and the half-sister's wavering all tore apart the family's disguise one by one. And the old detective who had been silent for thirty years finally handed over an unsent letter - it turned out that he was never the one who was abandoned.
