This is director/martial arts star Frankie Chan's unofficial remake of the Kinji Fukasaku film SHOGUN'S SAMURAI (1978). Instead of Japanese samurai in a period setting, we get modern day Chinese gangsters battling each other for the position left vacant after the mysterious death of their head honcho.
Hong Kong, Hong Kong is the story of a young woman, Man Si Sun, who has arrived illegally in Hong Kong from mainland China, and Kong Yuen Sang, a young man who is a gambler and wannabe boxing champion.