
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 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.
Ruzek and Atwater are tasked with making an arrest after a high-profile shooting; the situation becomes complicated when it's clear someone doesn't want them to make it back to the station.
When a local business owner is gunned down in his shop, it becomes personal for Atwater, who patrolled the neighborhood as a young cop; Dep. Supt. Samantha Miller comes to Voight with a special request about Andre Cooper.
Ruzek's father, Bob, goes missing, and the team races to find him before it's too late.