Prison on Fire (traditional Chinese: 監獄風雲; Cantonese Yale: Gaam yuk fung wan; pinyin: Jiān yù fēng yún) is a 1987 Hong Kong action film directed by Ringo Lam and starring Chow Yun-Fat. The film was followed by a sequel, Prison on Fire II, in 1991.
An explosive crime-drama that caused a sensation upon its release. Despite the bloodshed and violence, audiences were deeply moved by the fraternal bond between the two leading characters. Chow Yun-Fat and Tony Leung Ka-Fai are riveting as the inmates who get involved with the intricacies of the prison system. The film co-stars Roy Cheung as a prison guard.
The plot mostly involves the two main characters, Ching and Yiu and problems they face with Mickey, a fellow inmate and "Assassin", a prison guard. Yiu is sentenced to three years for manslaughter, in a fight for his father, he pushed a man and was run over by a bus,
Ching was sent to prison for killing his wife for being a hooker.
During the end of the film, inmates decide to go on hunger strike to protest against the cigarette price rise, this causes problems with Assassin.
Ching bit Surface's ear off and gets an extended sentence, continued on Prison on Fire II, Yiu is released later on.