This Hong Kong-based drama has been made to celebrate Hong Kong’s return to China 20 years ago. The story is about how the Organized Crime and Triad Bureau (OCTB) of the Hong Kong Police Force (HKPF) discovers an enormous conspiracy involving hundred years of history of Hong Kong’s criminal underworld.
In 2010, Cheuk Hoi secretly travels to Bangkok to conduct a drug operation with his undercover agents in Thailand. As they finish their mission and are about to leave Thailand, an explosion causes all of Michael’s undercover agents to die in a sea of fire. At the same time, Michael’s good friend, CIB Inspector Eddie Cheung, is killed for unknown reasons, leaving Michael in charge of a female cop who is not yet officially an undercover. Michael knows that Eddie still has undercover agents whose identities have been deleted. To learn the truth about Eddie’s death, Michael must find all of the undercovers. He and Priscilla begin to search for the undercover agents.
The usually carefree Guan Hong Yu (Pan Yue Ming) gets accused of having murdered a whole family. To clear his younger twin brother’s charge, the team leader of the criminal investigation department Guang Hong Feng (Pan Yue Ming) wants to take on this case, but since he’s a relative, he’s not allowed to participate in the investigation. A new team leader named Zhou Xun (Wang Long Zheng) is assigned and ends up seeking Hong Feng’s help. Zhou Xun and Hong Feng as his “consultant” uncover a number of cases together. However, Hong Feng has a secret: one of the twin brothers has fear of the dark phobia, so the “Hong Feng” appearing at the police station during the day and at night is actually not the same person. Together, the twins secretely try to find out the truth about the “family extinction murder case”.
Based on the bestselling novel by Zi Jin Chen. To protect the woman he loves, a white collar worker unintentionally becomes involved in a murder case and is from then on a suspect. In the blink of an eye, his quiet and boring life gets completely shaken up as he suddenly is both being chased by the police as well as gangsters.