Main plot: Five years after graduating from college, several college friends Gao Wei, Wang Zijian and Li Kui were reunited by a wedding invitation letter from Yang Peng, and their memories of college time began to unfold slowly. From the first day of school, they experienced the frustration and failure of love together, and also experienced the glory and success together. In these four years, Yang Peng experienced love from pursuit to letting go, and family from prominence to decline. Until they walk out of the campus gate, the ups and downs of life have completely changed each of them. At the end of the story, all four brothers were drunk, completely letting go of the estrangement brought by social tempering that they had not met for several years, and an unexpected surprise followed.