While living far from home, Lin Youran (Yan) returns when her mother falls ill. As she helps her mother take care of things, problems keep cropping up at the company, and she unexpectedly learns that she is adopted.
The shock leaves her mother unconscious, while her father and brothers are unable to manage the family business because of their important positions. Determined to uncover the truth and protect the family enterprise, Youran resolves to shoulder the responsibility, but her adopted status repeatedly holds her back. For the sake of the bigger picture, Youran enters into a contract marriage with her older brother, Lin Zimo.
When Lin Zimo's first love appears, old misunderstandings are cleared up. So which of them fell first?