College freshman Chen Guan was admitted to Jing University. His parents asked him to contact his cousin at the same school, and Chen Guan mistakenly added the cold campus belle Gu Xinyue. Gu Xinyue mistook him for a student recommended by a teacher and approved the request. Chen Guan mistakenly thought the other party was his biological cousin, and sent a message saying he wanted to 'slowly cultivate feelings', while Gu Xinyue mistakenly thought Chen Guan was pursuing her, and tacitly allowed them to get to know each other. The two gradually became familiar with each other. The two continued online interaction. In the laboratory, while Gu Xinyue was mentoring a junior female student, she constantly paid attention to the messages sent by Chen Guan, and their relationship gradually warmed up under the dual intertwining of reality and the internet.