In the pressure-cooker environment of Hong Kong’s education system, students grapple with a relentless barrage of exams and mind-numbing lectures. The strain becomes so overwhelming that it leads many students down the path of rebellion. Mr. Tai (Lui Wai-hung) is a dedicated, albeit nerdy, high school biology teacher who finds himself with his hands full, contending with a group of troublesome teenagers. These unruly students go to great lengths to make Mr. Tai’s life a living nightmare, often w...