Three girls, Su Mei, Ni Weijia and Ye Sha, are dependent on each other. Some are sensitive and fragile, some are bold and provocative, and some are beautiful and good at dancing. However, they all fall into the emotional rainy season at the same time. The objects they like are different: handsome tutors, outstanding top students in the same class, flying guitarists, and mature writers. They are high and low, they rise and fall, sorrow and joy are continuous together. Crystal clear love and sorrow. A group of young female companions take you into the exciting summer of 17 years old.