Jarek and Caleb arrive first on the scene at a bank robbery and chase the thief through the streets of Chicago only to find he has met a gruesome end. As the Chicago Police Department pieces together the clues of the robber, Superintendent Colvin conducts a critical meeting with Alderman Gibbons about a key construction site. Duplicitous politicking raises the stakes and further exposes the depth of corruption in the city.

After a bomber blows up a city building, additional targets and innocent people remain in danger. Teresa handles the escalating crisis, as Jarek and Caleb race against time to track down the suspect who might have ties to the Chicago Liberation Army. Meanwhile, Alderman Gibbons takes matters into his own hands when an armed teenage robber threatens him, which triggers a reflection on his own youth and upbringing when he was more of an idealist.

Detective Wysocki and Evers encounter uncooperative locals while investigating the death of a teenager in Chinatown; Teresa's brother-in-law gets involved with a shady business deal; Liam goes deeper under cover.

When Superintendent Colvin calls upon Detectives Wysocki and Evers to locate a drug supplier who sent the son of an influential couple into a drug-induced coma, they uncover a more elaborate murder case. As the evidence stacks up, a downtown club where rich men and pretty women mix becomes the focal point of the case. Meanwhile, Teresa has her eyes set on securing funding to buy the department new radios.

Following a murder that appears to be a hate crime, Teresa risks tipping Gibbons off to her big-picture plan by boldly taking on the Chicago Police Department's corrupt "meritorious" promotion system. Meanwhile, Jarek is forced to face his own reality when Vonda receives an anonymous package that reveals more about the Wysocki family