High school student Mu Ning has a beautiful girlfriend Li Xiaomeng who is dating, but Li Xiaomeng is always making troubles unreasonably and often doubts him. Although Mu Ning liked her, she became increasingly intolerable. Song Ling, Mu Ning's English teacher, seems to be particularly concerned about Mu Ning's affairs. On the eve of a spring outing, Li Xiaomeng left the sick Mu Ning to play alone. It happened that Song Ling went on a home visit. He took good care of Mu Ning, but Mu Ning hugged him tightly and Song Ling had no choice but to stay with him until early morning. After that, the relationship between the two changed subtly. Mu Ning gradually fell in love with Song Ling. He pestered Song Ling every day and felt uncomfortable when he saw Song Ling with others. Finally one day he mustered up the courage to confess his love to Song Ling, but Song Ling only regarded him as his younger brother in her heart. Mu Ning still didn't want to give up because he sensed that Song Ling might also like him. However, Li Xiaomeng interfered and caused many misunderstandings between the two. Can the teacher-student love between Mu Ning and Song Ling blossom and bear fruit?