Han Yinyou is an ordinary girl who is in the second year of high school. She has poor grades and is not very pretty. She is sometimes called an ugly duckling by others. However, she does have a classmate who is very good at studying. At some point, Han Yinyou fell in love with this classmate, Cheng Xianxi, because he was the only one who would not laugh at herself. When she was unrequitedly in love with him, Xianming from the United States (who was Yinyou's childhood sweetheart, but was 3 years older than Yinyou) said that she liked Yinyou, which made Yinyou have a different feeling when she saw Xianming. . . . .