A riveting police drama about the men and women of the Chicago Police Department's District 21 who put it all on the line to serve and protect their community. District 21 is made up of two distinctly different groups: the uniformed cops who patrol the beat and go head-to-head with the city's street crimes and the Intelligence Unit that combats the city's major offenses - organized crime, drug trafficking, high profile murders and beyond.

In a neighborhood where nothing exciting ever happens, a teenage boy recalls the events of his life leading up to the disappearance of the girl next door.

Tim Blake Nelson stars as 'Bang Bang' Rozyski, an eccentric retired pugilist obsessed with rectifying the sins of his past.