Senior Inspector Wei Jingsheng of the Serious Crime Unit and Senior Investigation Director He Weilian of the Hong Kong Independent Commission Against Corruption met unexpectedly during the process of hunting down a murderer. After being framed by stolen money and chased by killers several times, and after the partners turned against each other, they worked together to gradually surface a corrupt force that almost covered the entire top social network of Hong Kong. It is reported that the drama has nine major cases throughout, and some of the cases are adapted from real events.