Near the beginning of school, Tao Zhu and Wang Yiming ran to the café Big Blue Elephant to find Lin Nan to copy their homework, and revealed that a transfer student was coming to the class. On the other hand, Tong Xi reluctantly packs up at her mother’s request and prepares to transfer back to Xihai from Dacheng City. At the same time, she does not forget to send a private message to the idol cartoon god Qinghe, and she wants to go to the signing event with her crush Wei Ze. . On the day of the signing ceremony, Tong Xi avoided her mother and went to the station, but ran into Lin Nanyi, who had made a "marriage contract" with her childhood sweetheart. Lin Nanyi was injured in an accident and both missed the bus. On the first school day, Tong Xi ran into Lin Nanyi who was injured to save the cat on the road, and he changed a little bit for him.