In the 1950s, in the heart of Beijing's hutongs, a vibrant story unfolds within the walls of a traditional Siheyuan courtyard. Qin Huairu is a young and beautiful woman, while the mischievous Bang Geng is still a child. He Yuzhu is a 20-year-old man, and Lou Xiao'e is a young girl. Xu Huizhen is heavily pregnant, and Chen Xue is still unmarried. The arrival of Xu Deyong marks a turning point in their lives.