Xirong (played by Lee Chi-hung), Ah B (played by Tony Leung Chiu-wai), and Fai Tsai (played by Jacky Cheung) grew up together in the steep settlement of Shek Kwai Mei. The three of them were like brothers. Although their families were poor, their young hearts never lost their fantasies and aspirations for the future. Ah B was going to marry his girlfriend Xiaozhen (played by Fennie Yuen), and everyone came up with a plan to raise money for Ah B. Fai Tsai was robbed on the way to borrow a loan shark, and Fai Tsai went to the wedding with injuries. Later, Ah B and Fai Tsai went to take revenge and accidentally killed Fei Qiang, so Xirong and his group fled to Vietnam. At that time, the mayor of Saigon was relaxed outside and inside, which was purgatory for everyone. He even encountered the Vietcong assassinating Vietnamese politicians, so Xirong decided to fight to the death to get a sum of money before leaving Vietnam. Xirong's distant relative, the French-Chinese hybrid Ah Lok (Simon Yam), is a professional killer. Ah Lok learns that the Vietnamese bully Liang Yuansheng has a gold transaction in a nightclub, so he joins forces with a group of people inside and outside to snatch the gold away after a fierce battle. Ah B nearly dies to save a Hong Kong female singer, Chan Soo-ching... This ambitious masterpiece of John Woo's peak period has a profound exploration of love and righteousness, and the action scenes are hot and eye-catching. It is a rare masterpiece of Hong Kong films.