At a university in the late 20th century, A Yan, an artsy, slightly ditzy young woman, meets the campus heartthrob A Xu, the boy she promised as a child that they would attend university together. She also gets to know her roommates A Xue, A Min, and Yang Yang, and the four begin a wonderful university life.
A Yan meets someone with the same name as A Xu, and after making careful inquiries, confirms that he is the boy she made that promise to years ago. A Xue and A Min are both campus beauties, and the two become entangled over a boy.
Restrained love, uninhibited love, and love that goes both ways. Only years later do they realize that the love they experienced at university was the purest, most untainted love of their lives.
Life is unpredictable. When they meet again five years later, can A Yan and A Xu rekindle their old romance?
Theme: To be added