After being defeated by Ip Man, Cheung Tin Chi (Zhang) is attempting to keep a low profile. While going about his business, he gets into a fight with a foreigner by the name of Davidson (Bautista), who is a big boss behind the bar district. Tin Chi fights hard with Wing Chun and earns respect.

ICAC Investigator William Luk and JFIU Chief Inspector Lau Po-keung both hit a dead end in their investigation of a bribery case and a money laundering case. In the meantime, William Luk was suspended when model Eva Ng went to Inspector Kenny Ching of ICAC’s Internal Investigation Group L, to file a report against him for accepting a $12M bribe. Lau discovered Luk was set up and whoever framed Luk was connected to his case. He began to suspect the bank manager Thomson Yau was assisting a gangster, Wong Hoi-wo in money laundering activities. When Director Hong Liang of China’s Anti-Corruption & Bribery Bureau (ACBB) provided Lau with important intelligence, it became clear the money laundering activities were connected to a corrupted Vice-Ministerial Level cadre. To clear his name, William Luk put everything on the line…

The undercover agent with dragon tattoo Kowloon (Max Zhang) continually helped the police to solve mysterious cases, which made him known as a rising star. However, his impulsive personality dragged him into endless troubles. He got himself into fights with the Macau detective, as well as an American Army veteran Alexander who has a secret linkage to Kowloon’s background…

William Luk, goes undercover as a prisoner to investigate correctional officers who are receiving bribes.