Zhou Yutong is the campus belle. After her top-student senior confesses to her, they begin a sweet relationship, but she accidentally discovers that he has only been keeping her as a backup while flirting with other girls. She decisively breaks up with him, turns her heartbreak into motivation, and focuses on her studies, earning admission to Peking University with top scores. After failing the college entrance exam, her senior repeats the year and later gets into Peking University too. When they meet again, they honestly discuss the past and agree to officially be together, ultimately enrolling at the same university.