The British colonial government have yet to fully resume its duties.

Soon, multiple societies of different legions were formed within the HK underground.

Eventually the big clans merge, expand and betray one another.

The two major rivals, one run by the Lok family head Lok Zung-hing (Chow Yun-fat), the other by Ng Yat-tin (Tai Chi-wai) would collide.

Five years prior to the release of this series, the producer Chiu Chun-keung (招振強) collaborated with Chow-Yun-fat to release The Bund, a similarly themed story except in Shanghai instead of Hong Kong.