Chen Bidada (Yan Yikuan), a middle-aged businessman who puts profit above everything else, exchanges memories with high school student Gao Wenming (Zhou Qi) after an accident and becomes a sophomore at Yuying Middle School. He unexpectedly discovers that he actually has a son, Jiang Yu (Li Mingde), whom he has never met, and that he and Jiang Yu are deskmates. Chen Bidada uses his business experience to deal with Jiang Yu, but finds that adult rules do not work at all among this group of middle school students, causing all kinds of ridiculous incidents. Chen Bidada runs into obstacles everywhere with his son and cannot return to his own body. The company is in danger of being acquired at any time. Soon after, the real Gao Wenming wakes up in Chen Bidada's body and makes trouble... The truth behind this accident is shocking, and Chen Bidada must make a choice: family affection or profit.