In 1997, senior three students were about to face the college entrance examination, and they were also looking forward to their future. The class flower Dong Jiujiu is a cute girl who looks like a director and is rebellious at heart. Her friend Han Xia is a straight-hearted girl with a manly personality. Xia Jinghan is a melancholy Xiaocao. He, Luo Fan, Xiaoqiang and Dawei are the best partners in the class .
Dong Jiujiu's father died when she was eighteen years old. The birthday gift became her spiritual sustenance for missing her father. Xia Jinghan's parents divorced since she was a child, and she lives with her grandmother. She is a righteous boy. In the process of getting along with Dong Jiujiu, he developed an ignorant love for each other, and then they were together. Luo Fan is Xia Jinghan's best buddy, and he admires Xia Jinghan's heroic temperament the most, but his love affair with Dong Jiujiu makes the two brothers turn against each other. Although Han Xia has a burly figure and an ordinary appearance, she is still a little girl at heart. She has been living in the shadow of her sister Dong Jiujiu, which puts their friendship in crisis.