As the vice president of a listed company, Martin (played by Huo Jianhua) suddenly suffered from a brain tumor. He was alone and prepared to face death calmly, but there was a faint bond in his heart - he grew up with three friends who were as close as brothers in the alleys of Beijing.On the eve of high school graduation, an accident separated him and his three brothers... Martin wanted to resolve his old grudges and regain friendship before his death, so he returned to China and restarted the life story of the four brothers in Baofang Hutong.in “LightIt is not difficult to find many realistic projections in the Year” men's gang: rich but without health, Martin's life is facing the end; his son is about to take the college entrance examination but does not want to go to college, and the education problem is a headache for Wang Chunsheng (played by Tian Yu); Internet executives cannot escape being laid off, and Li Lianbao (played by Qiao Zhen)Yu (played by Yu) encounters a career crisis; Tong Qiu (played by Liu Duanduan) is an ordinary person who faces the pressure of parents to give birth and the cold relationship between husband and wife... All kinds of experiences can easily resonate with the audience, and the character experience setting is real and vivid, just like the epitome of middle-aged people who really exist around the audience.