Ding Xin, an only daughter from a small town on the 18th tier, was unwilling to repeat the simple and even boring life of her parents. After graduating from college, she came alone to work in a bright and prosperous city full of opportunities and temptations. From a young and transparent person who just entered the workplace, after several years of struggle and jumping from nest to nest, he became a senior white-collar worker with an annual salary of nearly one million. When she was finally able to live a contented life in Tiandu, she suddenly resigned in an emotional way and then caught up with the economic crisis. What is more painful than the difficulty of finding a job is that as a third party, she has persisted in a wishful relationship for many years in the name of true love, which has made her life and spiritual world extremely empty. Looking back at the past, it seemed that she had nothing in Tiandu except work and the lover she couldn't catch. Now there is no family, no job, no friends, and estranged family ties. At this time, many years after his father's death, his mother, who had been living alone, fell ill and was hospitalized, dying. Everything is like a punishment from heaven, falling on Ding Xin, whose spiritual world has been desolate. Inspired by the maternal love that Ding Xin had always ignored, Ding Xin decided to sell her house in Tiandu and return to her hometown to take care of her mother. Just when Ding Xin's life was on the right track, she encountered a car accident... When she woke up, she found that she had traveled to the workplace where she first entered Tiandu, where Ding Xin's dream of Tiandu began 20 years ago. With regrets after 20 years, Ding Xin began to reshape her career path, and also started love entanglements again...