Su Yao, the legitimate daughter of the Su family, has a cold nature. Ji Lan, the young master of the Ji family, is romantic and affectionate, but in fact he is affectionate and reserved. Su Yao disguises herself as a man and goes out to get acquainted with Ji Lan. The two go through various misunderstandings and twists and turns. Su Yao is favored by the group, but is forced to separate due to villain factors such as a vicious female supporting role and a conflict of ideas. She also suffers from an identity error. In the process, Ji Lan realizes her true feelings, and Su Yao also experiences incidents such as the spare tire turning black. In the end, the two reunite and achieve a transnational marriage.