Lin Cola, a humorous and optimistic advertising copywriter, entered the urban workplace for the first time. He formed a gang of four with Zhou Xiaoqian, a newly-minted illustrator, Zhao Daqian, a "poor-mouthed" entrepreneurial roommate, and Chen Nianzhi, a gentle psychologist, and grew up in advertising companies, art districts, apartment buildings, cafes, entrepreneurial spaces and other spaces. They face workplace competition, entrepreneurial setbacks, emotional entanglements, and family pressure. They experience farce, warmth, laughter, and curses, and gradually find new ways to resolve conflicts, find the true meaning of friendship, sublimate love, and understand family. The three volumes of stories respectively reveal their trials and transformations in urban life. In the end, everyone worked together in a large-scale urban incident and laughed at the prosperity and drama of life. The storyline is compact and ups and downs, humorous dialogues and absurd scenes run throughout, and the ending is warm and satisfying.