On the birthday of Gu Dahai (Han Tongsheng), the old man of the Gu family, the old man personally prepared the dishes, and his daughter and son-in-law came to congratulate. The eldest daughter Xiaoyan (Yu Feihong) married a wealthy son-in-law Ren Dawei (Tian Yu) who can make money, and lived a good life with no worries about food and clothing. The second daughter Xiaojun (Li Xiaoran), who works in a magazine, is over 30 but still has a fixed partner, which makes the two elders of the Gu family quite scratching their heads. On that day, Xiaojun finally brought her boyfriend Ouyang Jian (Wang Zhiwen) to the door, who knew that he was the tutor of her daughter's graduate student, a half-old man who was only a few years younger than Gu Dahai. Gu Dahai was furious, and the news of his eldest daughter's marriage change made him suffer physically and mentally. After that, Ouyang took a roundabout way to save the country and gradually obtained the consent of the two elders of the Gu family, and life after marriage was even more troublesome and frequent. Before becoming a real man, countless tests that ordinary people can hardly imagine are waiting ahead...