Secondary school teacher Mr. Leung meets his student Emily in a classroom after school to talk about her behavioural problems. He is subsequently arrested on Emily’s allegation of sexual assault. Before the trial takes place, Mr. Leung’s colleagues have already decided on his guilt. The school is anxious to brush the matter aside to save its reputation. Ms. Chan has known Mr. Leung for many years and is the only person who believes in his innocence, yet she is criticised and chastised by the others for supporting Mr. Leung. Under pressure from all sides, Ms. Chan hesitates to serve as Mr. Leung’s character witness.