Giving birth to a child at the age of 18, from the initial helplessness, panic, to acceptance, to the touching feeling of seeing Baozi's little face after the birth of the little Baozi. Lin Zifeng's life at the age of 23 has become extraordinary. However, many years later, he unexpectedly met that man again, Baozi's father, and the university professor who cherished the sun. Lin Zifeng's originally peaceful life changed accordingly.