Four years ago, Gu Xia Ning left without saying goodbye and went to the United States. Four years later, when she returned from her father's funeral, she faced not only the undercurrent of the family business Xia Ning Technology, but also the time and misunderstanding between her and her old love Zhao Yi. There are many doubts about his father's death, there are mysteries hidden in his will, his stepmother Shen Ying seems gentle but has an ambiguous attitude, and there is even a capital tycoon who secretly covets her. In order to save his father's lifelong efforts, Gu Xia Ning stepped into the crisis-ridden business battlefield with the help of his childhood sweetheart Bai Fei and the capable lawyer Qin Shu. At the same time, her relationship with Zhao Yi was difficult to rebuild amidst the torn apart between resentment, lingering feelings and reality, but was torn apart again by successive business crises and the choice of marriage of interests. The story unfolds in Le'an, a city where the old and the new are intertwined. It depicts the painful struggle and growth and transformation of a group of young people between family responsibilities, business interests and personal emotions, and explores the eternal proposition between gain and loss, protection and fulfillment.