
Chicago P.D.'s Intelligence Unit, led by Sgt. Hank Voight, investigates the city's most formidable offenses -- drug trafficking, organized crime, high-profile murders and other large-scale felonies. The squad -- made up of Voight, Trudy Platt, Kim Burgess, Adam Ruzek, Kevin Atwater, Jay Halstead and Hailey Upton -- is committed to protecting the city and seeking truth, but in the midst of a changing criminal justice system, the team struggles to maintain peace in the community. Voight must learn to adapt to a shifting sociopolitical climate and embrace new tactics to crack down on crime in the city he loves.

Ruzek witnesses a tragic accident on an icy bridge, leading Intelligence into a dark, sinister case involving sex trafficking.

An armed robbery case quickly turns into a homicide investigation; when one suspect's background suggests domestic violence, Upton is forced to reckon with her childhood; Voight and Halstead butt heads over Halstead's righteous instinct.

An eager young officer assigned to one of Chicago's most dangerous districts catches a case that Intelligence has an eye on.

The showdown with Deputy Chief Reid intensifies when Intelligence narrows in on Otero.