Xia Zihe, who had been a crybaby ever since she was a child, decided to change her past and correct the bad habit of crying after experiencing a certain event. For this reason, she studied hard to be admitted to a full boarding high school to improve herself. In order to get in touch with more people and opportunities, she joined the student union. Here, she met many companions and friends, solved various incidents, and enriched her own life. The role model, Ye Mingxuan, a second-year senior who is one year older than herself, played a big role in her high school life.