Firehouse 51 responded to a horrific warehouse fire that killed 39 people. This led the Chicago P.D. on a manhunt for the suspect. Now with someone in custody for both arson and multiple murders, it is up to Peter Stone and his team, including lead investigator Antonio Dawson to step in to bring some peace and resolution to so many families and friends of those lost - including one very close to home. When the team comes face to face with a hotshot attorney, they find themselves up against a dicey confession, incriminating evidence, and a questionable motive.
Just like their brethren in the Chicago P.D., the State's Attorney's dedicated team of prosecutors and investigators navigates heated city politics and controversy head-on, while fearlessly pursuing justice. As they take on the city's high-stakes and often media-frenzied cases, they must balance public opinion, power struggles within the system, and their unwavering passion for the law. And it all starts with a gut-wrenching case when one of Chicago's finest is shot in the line of duty.