Mr Wing was not a good teacher. He was as lazy as he could be in class, and he was often absent. The headmaster had given him a warning: IMPROVE OR LEAVE THIS SCHOOL were his words. Did Mr Wing improve? No, he became even worse. He began texting on his mobile phone - in class. He began forgetting his students' names, or even the lesson from the day before! Pupils talked about Mr Wing; teachers too. Was he drinking secretly? Worse! Was Mr Wing taking drugs?