The story happened in old Shanghai in 1930s, which was gentle and sad. Gu, Xu and Shen all work in a textile factory. Man Zhen is gentle and strong, and Shu Hui is cheerful and lively. In the process of getting along, Man Zhen fell in love with Shi Jun, who was gentle and honest. Man Zhen's younger sister, Man Lu, left her first love Yujin at the age of 17 to take care of her seven children, but her family couldn't really understand Man Lu, thinking that she was a disgrace to her family. Now that Manlu is old, she has decided to marry a reliable person for the rest of her life. This man is Zhu. Since then, maintaining the birthright of "Mrs. Zhu" has become her most important pillar of life.