Family Secret Synopsis: More than 20 years ago, Wu Lihua, who was working in a hospital, found the abandoned baby boy, and Wu Lihua and her husband Liu Ruobing took him in. Wu Lihua met a child who came to the hospital for emergency treatment. His mother, Li Yuwen, was very anxious because she didn't have medical expenses. The enthusiastic Wu Lihua helped advance the medical expenses.

By mistake, Li Yuwen later went to Liu Rebing's house to be a family nanny. Li Yuwen has always dreamed of literature, and Liu Rebing, who is passionate, wants to help Li become a writer, causing Wu Lihua's suspicion. Liu Rebing's daughter is a TV program host. In the interview, she found that Li Yuwen had been taking care of children suffering from epilepsy in an ordinary worker's home for four years. Liu Rebing and Wu Lihua were deeply moved, and Wu Lihua gradually eliminated the suspicion of Li Yuwen.

Soon after Wu Lihua died of illness, Li Yuwen took care of Liu Ruobing again, and Liu specifically directed Li's creation. Liu Guanghui, the child, mistakenly thought that his father and the family nanny caused feelings and tried to resist. Later, Liu Ruobing became brain dead due to an accident, and Li Yuwen completed her own novel collection while taking care of the recovered brain death. Liu Guanghui finally realized that he was an abandoned baby taken in by Liu Rebing. He repented and started a new road in life.