Mr. Kong is not a typical Hong Kong teacher. He isn't happy just teaching his students in his class, but he would rather go to rave parties and play along with them, as well as follow his female students and sit with them in their revision classes. However, by the time Mr. Kong wins the hearts of his students, the school revealed that he is not qualified to be a teacher.
| Actor | Role |
|---|---|
 Francis Ng Chun-YuKong Yau-mong | Kong Yau-mong |
 Ronnie Cheung Ho-LungHui Man-Keung | Hui Man-Keung |
 Anthony Wong Chau-SangTeacher Ching | Teacher Ching |
 Cheung Tat-MingTeacher Li | Teacher Li |
 Dayo Wong Chi-WahTutor | Tutor |
 Astrid Chan Chi-ChingTeacher Yeung | Teacher Yeung |
 Kwan Hoi-SanOld Won | Old Won |
| SSin Yan-KauPrincipal | Principal |
 Candy Lo Hau-YamHau-Yam (Actress) | Hau-Yam (Actress) |
| ZZack YungJoe | Joe |
| CChu Pak-WangDick | Dick |
| LLee Shung-HinFatty | Fatty |
 Isabel Chan Yat-NingWing | Wing |
| LLiu Yuk-ManChi | Chi |
 Ho Ting-YanConnie Tse Suet Fan | Connie Tse Suet Fan |
 Chiu Chi-ShingAdvertising director | Advertising director |
 Charlene Choi Chuek-YinStudent | Student |