Lam Wai Nin

In hopes to wake their father up, the sisters, Abb and May, set off on a journey in search of their father's past love. With such a drastic difference in personality, the sisters each take matters into their own hands to find her.

In 1970s Hong Kong, the Independent Commission Against Corruption (ICAC) was formed to bring down the corruption syndicate led by British government officials. One of its top investigators is Senior Investigator Lau Kai-Yuen, who brought down countless corrupted officials. Just as he thought stability and prosperity are within reach, a new era of greed and riches takes him into a new battlefield of corruption.

In 1980s Hong Kong, troubled youth Chan Lok-kwun accidentally enters the notorious Kowloon Walled City. Lok-kwun, a refugee from the mainland, struggles to survive by participating in underground fighting rings. He seeks to buy a fake ID to improve his life but is betrayed by Mr. Big, a local crime syndicate boss. In a desperate move, Lok-kwun steals drugs from Mr. Big and flees to the Walled City, where he encounters Cyclone, the local crime lord who rules the area with a mix of authority and compassion.