Sheng Qin (Alia)'s father, Mr. Sheng (Wang Deshun), suffers from Alzheimer's disease and is getting worse and worse. In the end, he can't take care of himself. In order to take care of his father's diet and daily life, Sheng Qin hired a nanny named Mianhua (Yan Bingyan). Although Mr. Sheng's memory is fading every day, the only thing he can't forget is his wife who has passed away for many years. Not long after Mianhua took office, he was repeatedly mistaken for his wife by Mr. Sheng, causing a lot of trouble. Mianhua's character was also questioned by Sheng Qin. As time went by, Mianhua and Mr. Sheng established a special trust, but at this juncture, Mianhua was pregnant. The collapsed Sheng Qin suspected that the child in Mianhua's belly was her younger brother, so she secretly launched an investigation, which also involved the secret that Mianhua had hidden for many years.