The story takes place in the lively small town of Luxiang City, where the ordinary girl Xia Mi unexpectedly gains admission to the prestigious City No. 1 High School. By chance, she meets Zhang Ruo Xi, a sunny and bold teenager; Fan Yuan, a calm and rational academic achiever; and Lin Ruo Lei, a beautiful and friendly top student. These four very different teenagers, along with a group of classmates from all over, create an inspiring and humorous "symphony of youth.