Story of Tong Yu, Guo Chong, Li Jiesen and Xiang Xiaofei, who are close friends in university. 2020 in Shanghai, artificial intelligence engineer Tong Wu, university lecturer Guo Chong, branded shop manager Xiang Xiaofei and western restaurant chef Li Jiesen have reached the age of maturity. However, they have reached a stage of nadir in their respective careers. Tong Wu faces difficulties in research and development, Guo Chong has lost his passion
