Li Nuannuan has been suffering from stuttering since childhood. He speaks incoherently and is bullied and laughed at by his classmates and despised by his future father-in-law. Li Nuannuan's dream is to be a Chinese teacher. He was admitted to a normal university as he wished. However, he failed interviews with many schools because of his stuttering. Finally, a school is willing to hire him, but he is in charge of the class with the worst academic performance and the most difficult students to manage. Facing the ridicule and contempt of students and the exclusion of colleagues, can Li Nuannuan persist?