Liu Yuheng, a widower, adopted the orphan boy Fu Chengze and made a promise: "You will protect me in my old age, and I will help you become a talent." She devoted all her efforts to help him study and help him become the number one scholar. However, after Fu Chengze became famous, he hesitated about the promise of "sending him off". This special bond that transcends age has been tested over the years and finally ends with relief, which illustrates the balance between responsibility and self for ordinary people.
