Zhou Xiaolong (played by Stephen Chow) lives in Tai O with his father Zhou Feihong (played by Yuen Wah). He and his junior sister Maomao (played by Mo Shunyun) are a pair of innocent and happy enemies. One day, Xiaolong's uncle Mo Yan (played by Leung Ka-yan) went to Tai O to hide from debts. Feihong asked Yan to bring his son Xiaolong to Hong Kong for development. Yan accidentally discovered that Xiaolong...