It tells the story of Xu Yatang, the dean of the College of Liberal Arts at Mingju University, who lost his memory after a car accident during the summer vacation. His mind was stuck at the age of 16. He did not recognize his wife Guan Xiange and daughter Xu Zhixuan. He also made a lot of jokes because he was not able to adapt to the current life due to the 30-year "jet lag". Xu Yatang suddenly lost his memory. The whole family decided to conceal the matter and help him recover his memory. Unexpectedly, at the age of 16, he did not dare to sleep with Huan Xuan Ge, so the attending doctor took the opportunity to pursue Xuan Xuan Ge; the daughter who was in high school secretly fell in love; the father knew that her husband had amnesia and forced her to divorce; the husband's brothers had been at odds for many years; the husband's first love also divorced, and they took advantage of her husband's amnesia to rekindle the old relationship. After a series of turmoils, Huan Xian Ge regained the feeling of love. The two fell in love with each other again, and Xu Yatang also recovered his memory.
