Hong Kong securities businessman Luo Minsheng (played by Andy Lau) was in a car accident on his way to work. This seemingly ordinary car accident attracted the attention of the anti-terrorism team. It turned out that the police found a military bug in Luo's car, and the anti-terrorism team leader He Zhiqiang (played by Louis Koo) suspected that someone was planning a terrorist attack. As He investigated, the veteran Sima Nianzu (played by Daniel Wu) who had always been hiding in the dark to monitor and eavesdrop gradually surfaced. At the same time, Luo told the news of the eavesdropping to the elders of the "Landlord Club". This is a group of industry elites who have been manipulating Hong Kong's finance since the 1970s, and now they have become money-grabbing tycoons who cover the sky with one hand. The fact that the Landlord Club was eavesdropped undoubtedly indicates that their various shady dealings will be revealed to the world. Originally thought to be just an ordinary blackmail case, Luo, He, Sima and others were dragged into a vortex of no return...