The young couple Xiao Lu and Fang Yinuo have been married for many years and have a baby boy. On the day of delivery, Xiao Lu, who was in a panic outside the delivery room, was unexpectedly absent. With the birth of the child, the new parents also began to face various challenges after the change of identity. With the intervention of both parents, a series of family conflicts occurred frequently, leading to the turning point and reefs in the relationship between the couple, and the two eventually parted ways. Many years later, they have reorganized their families and their lives have returned to peace, but their daughter He He was found to have leukemia at this time. From a medical point of view, the doctor suggested that they have another child to save lives. As a result, the storm caused by the rescue of the daughter pushed several families into the torture of human nature and difficult choices.