Yan Qing, who graduated from a prestigious school, has outstanding talents. She is a pianist, a senior nanny, and has won an international design award. After encountering changes in her relationship and family relationship, she accidentally entered the wealthy Lu Zhan's family. The Lu family's three-month-old twins were notoriously difficult to coax, but they were particularly well-behaved when they saw her. Lu Zhan proposed a three-year engagement and asked her to marry him as the mother of his child. Yan Qing originally wanted to leave when the term was over, but she gradually became dependent on her two children. The cold-faced Lu Zhan also protected her at every turn. People and things from the past came to her door one after another, and she realized that this marriage was far from simple as she imagined.