Yuan Ge and Gu Qiao are a pair of sisters from a small town. After graduation, one chose to stay in Shanghai to work hard, and the other chose to return to the small town to be a good wife. As they approached their thirties, they encountered unprecedented difficulties one after another. Yuan Ge has been focusing on work for many years, neglecting her emotional life and her body was in trouble. She began to try to change herself; Gu Qiao constantly compromised for love for eight years, but in the end she only got a divorce agreement. She was determined to restart her career. The sisters have completely different personalities, but they are equally tough and brave, and are not afraid of falling. In a metropolis like Shanghai that is full of opportunities but also easy to get lost, they always insist on working together to overcome the difficulties of life. Helping each other and achieving each other, the two finally gained something in their respective workplaces and emotions, completing the transformation of youth together, and ushering in a brand new 30 years old.