The team bring in a suspect during the investigation of a murdered marine. However, they are forced to start again when the suspect is killed.
Voight and the team take a look at a house that has been linked to a series of gangs; Halstead struggles to maintain his composure when he is confronted by people from his past.
The team investigates the death of a hip-hop artist who is murdered just days after signing a record contract with Kevin Smith.
When Cate goes back to work, Paul has trouble dealing with his daughters' burgeoning interest in boys.
Paul makes excuses to keep Bridget from taking her driver's test; when Paul encourages Kerry to enter an art competition, her submission is rejected.