Luo Xiaobei finally said goodbye to his junior high school days and entered the closed high school campus with his excellent grades. Xiaobei, who had always longed for a life on campus, unexpectedly discovered that Wang Haotian, who was in the same school as junior high school, was in the same class and dormitory with him. Although Xiaobei could not remember Haotian's appearance in his memory, after meeting Haotian, Xiaobei found that he was deeply attracted to this sunny boy, and began to doubt whether his feelings for Haotian were friendship or legendary sympathy. After struggling with contradictions, Xiaobei chose to face his feelings calmly, but firmly adhered to the principle of being in love and being polite. Perhaps due to the ravaging of emotions by morality, Xiaobei never told Haotian about her feelings for him until the two separated due to conflicts. Another almost perfect boy, Xiang Zuoyang, walked into Xiaobei's life. During the days of getting along with Xiang Zuoyang, Xiaobei experienced Yuan Kong's imprisonment and death, and learned about Zuoyang's story. Xiaobei gradually recognized his own emotions and understood his attachment to Haotian. Zuoyang's past and present deeply touched Xiaobei. Finally, with Zuoyang's encouragement, Haotian and Xiaobei expressed their inner feelings to each other. Xiaobei, who has gone through three years of high school, finally knows what kind of love he is undertaking, and finally knows how to face this love...