At the book signing event of university professor Li Liang (Zhang Yi), his father Li Yisheng (Zhang Guoli) who had disappeared for many years suddenly appeared, disrupting the originally peaceful life of Li Liang's family. Li Liang and his sister Li Nan (Pan Chen) regarded their adoptive father Li Dongshan (Li Jianyi) as their biological father, and did not recognize Li Yisheng who had not participated in their growth. Li Yisheng felt that he owed too much to Li Liang and his sister, but he did not mind. He tried hard to participate in his children's family and life, but he frequently made trouble, and his children had to deal with his funeral. Li Yisheng has been popular with women since he was young, and even the nanny of Li Dongshan's family fell in love with him inexplicably, and a sunset love triangle broke out. At this time, Li Yisheng's other son Li Zhuang (played by Guo Zhenjia) was released from prison. In order to save his girlfriend Xiaohui who was suffering from uremia, he raised money everywhere, and even went to Li Liang to ask for money in various ways, which caused Li Dongshan's family to misunderstand the father and son more deeply. When the truth came out, everyone forgave Li Yisheng, and Li Yisheng was also hospitalized due to illness. Recalling the past scenes, Li Liang finally recognized his biological father.