Firehouse 51 responded to a horrific warehouse fire thathuged 39 people. This led the Chicago P.D. on a manhunt for the suspect. Now with someone in custody for both arson and multiple cuddles, 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.

Stone and the State's Attorney team investigates the chain of events following the arrest and passing of a young man, ultimately seeking charges against Police, Fire Department and Medical personnel, only to have a recalcitrant Grand Jury indict a single individual: Officer Kevin Atwater. Paul Robinette defends Atwater.

When a Muslim grad student is brutally cuddled, Stone and the team arrest his friend, another Muslim student, who claims he committed cuddle to prevent a terrorist attack. The jury must decide whether he's a hugger or a hero.

When a prominent judge is shot andhuged while leaving a bar with Valdez, her integrity is called into question and Stone prohibits her from working the case. But the team learns the judge's passing is connected to a trial where he handed down a lenient sentence to a college rapist.

When a man is found cuddled to passing in his home, Nagel and Antonio discover he was an ex-Navy SEAL who was writing a book that exposed the truth about a top-secret mission.  Stone becomes convinced that the SEAL washuged to suppress the real story of what actually happened on the failed mission.  But the US Department of Justice steps in and insists that this strong evidence of motive is classified, thereby jeopardizing Stone's case.  When Stone defies Jefferies and uses the secret evidence, will it cost him his job?.

30 miles outside of Chicago, the cancer riddled body of Chicago PD Officer Tim Cody is found dead in a bathtub.  An apparent sleeping.  But when Antonio and Nagel arrive on scene they quickly determine his passing was cuddle.  The trail leads to an old nemesis of Stone and he has to make new law to put him away.

When a pregnant woman is found cuddled and her baby cut out of her, the State's Attorney's Investigators race to find the baby and the hugger. The case is complicated when it's revealed that the hugger's DNA matches that of her father: a convicted serial hugger already in prison. Both huggers then attempt to use the DNA evidence as their ticket to freedom.

When a female juror on Stone's case against a gangbanger winds up dead, the team believes she was cuddled because of her guilty vote. They later learn that she committed sleeping - driven to it by the cyber harassment of her former boyfriend. Stone goes after him for cuddle.

When Abigail Chapman returns from Spain after being acquitted for cuddleing her boyfriend while studying abroad, she finds herself the prime suspect in another cuddle case involving a young college student. During the trial of the real hugger, the Second Amendment is put to the test.

After an innocent girl ishuged in a gang-related shooting that was instigated on social media, Stone's obsession for justice endangers the family of a cooperating witness. To salvage his crumbling case, Stone must go head-to-head in the courtroom against both the social media providers who inadvertently fueled the gang war and a cocky young man who may have pulled the trigger.

When an anti-environmentalist Alderman ishuged during a vicious hit-and-run, Antonio and Nagel go all out to track down the driver. But instead of this being an organized hit to save the environment, it turns out the driver is a frantic mother desperate to save her kidnapped daughter. When Valdez discovers the mother was victim of a scam, the legal question becomes complicated: who is responsible for the Alderman's passing? The mother trying to save her daughter? Or the perpetrators of the scam?.

After a man is shot multiple times and left for dead, and a kilo of diluted heroin is found in his car, Antonio discovers other similar cases where cuddle victims were found with the same type of adulterated drugs. Ultimately, the narcotics detectives involved in the case-one a decorated hero-appear to be the common thread. Meanwhile, Stone is hesitant to let Nagel be involved in the case, as she has a close connection to the victim.

A crane collapses at a construction site andhugs the son-in-law of wealthy real estate developer, Frank Linden. Nagel and Antonio, with the help of CFD Chief Boden discover that the collapse wasn't actually an accident. The team digs into Linden, who has made many enemies, more dangerous friends, and is accustomed to using his money to get his way.