
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.
A vigilante posts a video online of a man, previously locked up for statutory rape, being beaten and burned alive; Lindsay encounters some personal and professional problems.
Lindsay's mother, Bunny, becomes a murder suspect when her boyfriend is shot; high school students overdose on drugs; Lindsay finds herself up against the review board.
A young bystander is shot during a difficult operation; Chief Lugo reviews the shootout and Halstead becomes a key player in the outcome.
A patrol officer becomes a suspect when a van explodes during a Chicago street festival; Burgess, who helped train the officer, is desperate to prove his innocence.