In his previous life, Lu Shen suffered the devastating loss of his infant son. His wife suffered a mental breakdown, and he himself eventually died in despair. Reborn, he returns to the maternity ward on the day his child is born, determined to protect his wife and child at all costs this time. Drawing on his memories of his previous life, he recognizes suspicious individuals disguised as hospital caregivers. He secretly takes photographs as evidence, contacts friends to help investigate, reinforces the security of his home immediately after discharge, and proactively provides the police with clues. Following the leads, the police successfully dismantle a child-trafficking gang that disguises its members as caregivers and operates across multiple locations. At last, Lu Shen makes up for his regrets from his previous life, witnesses his child growing up, and protects his family and their peaceful, loving home.