In Beijing, three families preparing for the college entrance examination not only face the pressure of entering higher education, but also face difficulties in their parent-child relationship. There are many conflicts between the mother Tong Wenjie (played by Hai Qing) who hates iron and her son Fang Yifan (played by Zhou Qi) who is a scumbag, and her father Fangyuan (played by Huang Lei) has to mediate; the single mother Song Qian (played by Tao Hong) who refuses the intrusion of her ex-husband Qiao Weidong (played by Sha Yi) into their mother and daughter's life, has a negative attitude towards her daughter Qiao Yingzi (played by Li Gengxi). (Played by Wang Yanhui) and mother Liu Jing (Yong Mei) suddenly showed concern, leaving Ji Yangyang (played by Guo Zifan) who had been raised by his uncle Liu Zheng (played by Ren Chong) at a loss. The cautious relationship between father and son did not bring peace to this relationship.
In the important trial of the third year of high school, middle-aged parents and children who have just entered adulthood must overcome the many difficulties set in life, learn to grow in love and understanding, and usher in their own "little joy".
