17-year-old Li Jinbu (Zhuang Dafei), a top student in high school, accidentally returns to the teenage years of her mother Li Qingtong (Chen Haoyu), a poor student, and meets her scumbag father (Wang Hao) and her 4D colorful deceased grandfather (Jia Bing) and grandmother (Niu Li). She immediately integrates into her mother's circle of friends, tears up her scumbag father, and frantically matches Crush Wu Zhixun (Bi Wenjun). She is determined to "let my father be controlled by me, not my mother", and starts a hilarious journey of changing her father...