
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.

After a seemingly innocent young man is gunned down in the street, the team works to bring in the suspected culprit, but the case is more complex than it appears; the grief-stricken father is determined to do his own undercover work.

The team investigates a rash of carjackings and finds the truth is more complicated than it seems; Burgess makes a discovery about a previous case that will change her life forever.

New York's SVU agents Fin and Rollins help track down a serial killer who rapes his victims; Burgess gets an opportunity to prove herself; Lindsay brings Halstead as her date to her high school reunion.

After a series of deadly ambushes, the team goes undercover to bring down a dangerous new drug dealer who is determined to push out the competition; Ruzek's informant proves to be a loose cannon, which could upset the whole operation.