Zhao Qiaoyi and Yan Mo are deskmates in a high school. One is a bad
STUdent and the other is a top
STUdent. Although they don’t seem to have anything in common, they become close friends and make a promise on the day before graduation to
STUdy abroad together. But due to an unforeseen incident in Qiaoyi’s family, she can’t keep the promise and the two lose contact. Four years later, they meet again at their class reunion. Qiaoyi finally admits her own feelings and decides to go where Yan Mo lives, but she happens to discover that there is already someone by his side. Yan Mo, though, secretly does a lot of things for Qiaoyi, he is unable to express his feelings. Will the two be together in the end?