17-year-old high school student Li Jinjin (played by Zhuang Dafei) and his mother Li Qingtong (played by Chen Haoyu) have always had numerous conflicts. By chance, Li Jinjin returned to his mother's high school years and broke into her friend circle, the "scrap metal band". When Li Jinjin, who was determined to change his father against the sky, met Li Qingtong and her friends, who were full of emotions and righteousness, their living conditions were constantly changing but full of laughter. A humorous journey of youth is quietly beginning