
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.

Dueling gangs are suspected when a massacre occurs and $8 million is stolen; Platt asks Ruzek for help.

Ruzek grapples with his father's worsening condition while Intelligence searches for an elusive serial killer.

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.

A mounting street war threatens a community-center project that Atwater is trying to get off the ground.