The story of the rise and fall of the Baltimore Police Department's Gun Trace Task Force — and the corruption and moral collapse that befell an American city in which the policies of drug prohibition and mass arrest were championed at the expense of actual police work.

In the midst of a personal crisis, junior senator Maggie Davidson ascertains that she's the subject of a terrorist plot.

Told from the points of view of both the Baltimore homicide and narcotics detectives and their targets, the series captures a universe in which the national war on drugs has become a permanent, self-sustaining bureaucracy, and distinctions between good and evil are routinely obliterated.