
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.

Voight's son may be involved with the Fitori murder case, intensifying tension between Antonio and Voight; Ruzek helps Burgess get retribution.

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.

Voight's new Internal Affairs handler proves to be suspicious of his actions; Voight must work with his former partner from the Gang Unit; Halstead enlists Jin to help him gather more information on Lonnie Rodiger; Olinsky takes Ruzek down a peg.