In 1950s Hong Kong, brothers Lui Cheng-tung and Chen Jim fled to lawless Kowloon Walled City at career peak. They endured, awaiting chance to reclaim losses. Encountered a man who impacted their struggle to regain what they lost.

In the 1950s, Lui Cheng-tung and his brother Chen Jim, who were at the peak of their careers, were forced to flee to the lawless "Kowloon Walled City" in Hong Kong at that time. They endured and survived, waiting for the opportunity to win back everything they had lost, until they met a man called Cyclone.