Fifteen year-old Xian goes to live with her father while her mother, a doctor, takes a job in Africa. Soon, she becomes fascinated by her father's stepdaughter, a swaggering, liberated and slightly melancholic young woman.

Sun Xiaolei, a drama school student, is facing the first important competition in his life, but the delay in changing his voice makes him anxious. In the process of preparing for the competition, Xiaolei accidentally became friends with two competitors - Shi Jiahui, a boyish old girl, and Xie Tianci, who was born in a famous Beijing opera family. In the long summer, the three teenagers are about to face a "reversal" of puberty.

A group of students trained in the special school for the art college entrance examination.

In a small seaside town, two schoolgirls are assaulted by a middle-aged man in a motel. Mia, a teenager who was working on reception that night, is the only witness. For fear of losing her job, she says nothing. Meanwhile, 12-year-old Wen, one of the victims, finds that her troubles have only just begun. Trapped in a world that offers them no safety, Mia and Wen will have to find their own way out.