After weeks of anticipation, NBC's 2026 One Chicago crossover event finally unfolded across the thirteenth episode of Chicago Fire, Chicago Med, and Chicago PD's current seasons. Heading into the crossover, we knew to expect high stakes and life-and-death circumstances, and the shows certainly delivered upon that promise!
As the One Chicago, “Reckoning” crossover begins, we’re transported inside an air traffic control center where Dominion 63 loses communication with air traffic control. Cut to Chief Pascal riding into work as he listens to the radio talking about a planned memorial for Deputy District Chief Cranston when he gets a call. We don’t immediately know who has called him, but he hits the sirens and races into action, suggesting it’s connected to the plane.
Twenty-two minutes have passed since the last transmission from Dominion 63, and the FBI has been alerted. Enter Special Agent Upton, who is greeted by Darren Jackson, the operations supervisor who called in the incident. Shortly after, Pascal shows up as the CFD liaison and meets with Upton, who brings him up to speed. The commercial aircraft went dark over Lake Michigan without warning or explanation. Radar is showing it’s still airborne, but the pilot and copilot stopped responding 32 minutes ago with no distress signals. The plane is heading right to Chicago, and that’s all that’s known at the moment.
At Firehouse 51, Novak is talking about her breakup with Frost, dreading small talk with him when they inevitably cross paths at Med. Violet assures her she’ll be fine as she sneaks off to speak with Vasquez. She admits to him that she had a great time but stressed their night together needs to be a one-time thing. He’s understanding, but before they’re able to have a real conversation, a call comes through to respond to the airfield, and 51 heads out.
When they arrive at the airfield, Pascal is already on the scene with the FBI as they cross paths with Truck 68. Severide, Mouch, and Kidd meet with Upton, who brings them up to speed on the plane situation as they watch the aircraft coming in for a landing and brace for it to crash. To everyone’s surprise, the plane lands smoothly.
Upton informs the team there is no response and orders Firehouse 51 to breach the plane. Squad 3 begins to prepare to open the front door. Cruz heads up on the rig and manages to open the door before going in with Macy and Holt from Truck 68 as Capp waits outside on the ladder. As they board, they find all of the passengers aboard the plane are dead, with all signs suggesting a hazmat situation, which leads Pascal to order everyone off the plane.
The search for answers over what happened to the the passengers of Dominion 63
As Cruz, Macy, Holt, and Capp get sprayed off and go through d-comp and get checked out, Severide suits up to head inside to check for survivors. He finds the pilot and copilot both dead in the cockpit as Hazmat arrives outside. Pascal calls in for a progress report, and Severide is shaken by the scene before he relays to Pascal that his gas readings are negative. He thinks it might be chemical, but he has no clue what it could be.
Pascal tells him there is a hard drive in the overhead bin that should contain footage of inside the plane cabin, which might give them answers. Just as Severide’s about to exit the plane, a pregnant woman comes out from the lavatory and is rushed into the ambulance. Violet and Novak race into action, taking her vitals and stabilizing her before heading to Med.
Pascal and Upton try to figure out what happened as David Conway, the Weapons of Mass Destruction coordinator for the FBI Chicago field office, shows up and assumes control of the scene. Severide returns with the hard drive, and they pull up the footage. Everything inside the cabin seems normal at first. Severide notices a man who exhibits the first signs before the other passengers begin showing similar symptoms. He tasks Upton with looking into the passenger in 5D who seems to be Patient X.
Turns out the man in seat 5D was connected to a case Upton had been working on. He was a drug trafficker, and something is not adding up to her, as it doesn’t make sense he would jump to terrorism.
Violet and Novak arrive at Med and are surprised to be greeted by U.S. Marshals on location and order them to stay in their vehicle with the windows up as they await further instruction. It seems word of what happened on the airfield has traveled fast, and they’re working to contain the unknown chemical agent the woman on the plane was exposed to. Violet calls Vasquez, who fills her in that the FBI is calling this a chemical weapon attack and putting emergency protocols into place.
Goodwin, Archer, Hannah, and Lenox watch from outside the Gaffney ED as Goodwin gets a call and mentions that one of her doctors was Army Special Forces and might be exactly what they’re looking for.
Upton and a team of FBI agents head to the drug trafficker’s apartment. All signs indicate he was planning to come back, hinting this wasn’t a suicide mission for the man. As they’re searching the apartment, Upton finds an aerosol can with a photo of Halstead inside, dropping our first clue as to how he’s going to be connected to the case.
Upton fills Voight in on Halstead's case as things get complicated for Novak
After searching the apartment, Upton goes to see Voight. She explains that a few weeks ago she heard chatter on a tapped line about an American trafficker who got made as a U.S. military operative in Bolivia: Halstead. She was worried that warning him would put him in danger, so she started working the case herself.
It led her to a local drug mule trying to smuggle in a chemical for a meth cook. Upton doesn’t think it’s a coincidence the mule was on the plane. Her gut tells her whoever is behind this used a local operative through local channels for a reason. She asks for Voight’s help in warning Halstead and suggests he might know something they don’t as she heads to the morgue to meet with the medical examiner.
In the ambulance, the woman’s stats are crashing. Novak races into action, but the woman hits her as she comes to and fights the intubation. Violet tries to get out of the vehicle to help, but the marshals refuse to let her out, leaving Novak to tend to the patient on her own. She’s eventually able to get the woman stabilized, but Violet notices blood on Novak’s face, which means she was likely exposed to whatever toxin they’re dealing with. As Novak cleans her face, Violet attempts to call for a status update, but they keep her on standby.
Hannah wants to go out to help as the woman goes into active labor, knowing she’ll need a doctor, but Dean strongly opposes the idea, as does Goodwin, who says they need more time to figure out what they’re dealing with.
At 51, Kidd checks in on Severide, who is understandably shaken by what he saw on the plane. He admits this one is hitting him hard. He’s not going to sit by on the sidelines and excuses himself to meet with Lenox and Pascal to describe the victims’ wounds and try to determine what they’re facing. Upton calls to check in, and Lenox explains that the symptoms don’t align with any chemical exposure she’s encountered. Upton asks if she’s heard of a particular toxin that could be connected to the attack. Lenox hasn’t but agrees to consult and help however she can, as she and Severide head to the morgue to meet with Upton.
While listening to a pathologist’s initial report, Lenox notices a man digging into the body cavity of one of the victims. She questions him, and the pathologist asks for his credentials. The man breaks a light, starts a fire, and flees, triggering a lockdown that traps Severide and others inside.
Halstead enters the mix as things take a turn for the worst for Cruz and Capp
Severide works to open a vent while Lenox uses a fire extinguisher to fight the flames, as Upton follows after the man. Severide is able to open the vent and helps the trapped lab techs out, sending Lenox through before exiting himself as Kidd and the others force the door open.
Upton finds a discarded hazmat suit as the suspect gets the jump on her, hits her with a two-by-four, and grabs her gun. Just as he’s about to shoot, Halstead arrives and orders him to drop it. When a victim from the fire makes his way outside, it creates just enough of a diversion for the suspect to flee. Rather than following after him, though, Halstead stays with Upton, not wanting to leave her due to her head injury.
We cut to Cruz, who is driving Squad 3 to the morgue as he mentions tightness in his chest. Capp tells him to pull over before he begins seizing. Cruz manages to stop the rig as Capp foams at the mouth and passes out. Before Cruz can call for help, he passes out too, suggesting they were exposed to the toxin and are now in need of urgent medical attention.
Back at the morgue, Lenox patches up Upton and asks about the gloves the suspect wore. Upton mentions a logo, and Lenox recognizes the brand name of the Aepex compression gloves, which are traceable. Halstead notes Omar, the passenger in 5D at the heart of the investigation, specialized in body packing and was paid triple to have two capsules surgically implanted. Lenox deduces cabin pressure likely compromised one, resulting in Omar’s death and the deaths of everyone on the plane. They deduce that the suspect likely came to see if the second survived, suggesting this may have been an accident. Scans show one capsule indeed ruptured and the other remained intact. The suspect retrieved the second, meaning his plan is already in motion.
In the ambulance, the pregnant woman goes into cardiac arrest. Novak pushes epi, but time is not on their side. They have four minutes before they have to deliver the baby. Violet pleads for an OB to be sent immediately as she heads to the back of the ambulance to assist Novak. Hannah arrives to provide support. She performs an emergency C-section to deliver the baby. She hands the baby off to Violet to be checked, and there don’t seem to be any immediate signs of exposure. Novak and Hannah race to try to see the mom, but it’s too late; she’s gone.
Inside Gaffney, the nurses begin prepping the ED for patients under Goodwin’s assistance. Dean enters and confronts Goodwin about sending Hannah out there to the ambulance and not protecting her, as Charles assures him no one was going to keep Hannah out of the ambulance, not even him.
Upton gets approval for Intelligence to be deputized as TFOs so they can take the lead on the local investigation alongside the FBI. Upton and Halstead head out, and she mentions finding a picture of him and Omar which he suggests seems to have been taken as insurance. Halstead mentions he was a CI, but they had just started working together, so they hadn’t built much trust. Upton reveals she had caught wind of his operation, and he realizes she was trying to protect him as he admits there were so many times he wanted to reach out. Before he can push the conversation further, she shuts the conversation down and makes it clear now is not the time.
As Kidd and the team prepare to head up, Severide asks if anyone heard from Squad, but no one comes through. They head out to their last known whereabouts, and Severide pulls Lenox to join them, worrying something is wrong. While they’re in transit, Briggs calls Kidd and informs her that Macy and Holt were showing signs of respiratory distress and are being taken to Med. That's when they notice the rig off in the distance and find that Cruz and Capp both unconscious but breathing inside.
The attack hits close to home for the Chicago Fire team and Dean
At Med, Ripley, Frost, and Dean are preparing for the patients as we see Cruz and Capp brought in. Violet and Novak have also been brought in and put through d-comp to monitor for exposure. Severide takes a walk to get some fresh air and asks Kidd to text him when she gets an update.
The 51 family assembles in the Gaffney waiting area, including Tony, who feels guilty that he wasn’t there on the plane in Capp and Cruz’s place. Chloe arrives next with Havi and Otis as Mouch assures Havi that Cruz is tough as nails. The last to arrive is Macy’s mom, Pamela. Kidd tries to assure her things will be okay, but Pamela ices her out as she walks off.
Cruz asks Dean to tell Chloe and the boys how much he loves them as Dean assures him he’s not going anywhere as he looks on as Hannah is getting checked out. Meanwhile, Ripley checks on Macy, who is worried that her mom never wanted her to be a firefighter and this won’t help. Charles goes out to see everyone in the waiting area and lets them know everyone is stable and seems to be improving. The next couple of hours are crucial. Charles notes that they’re not allowing visitors out of caution as Macy’s mom asks if he can give Macy her baby blanket to comfort her.
After some digging, the Intelligence Unit find the location of where Omar was set to meet for the handoff of the vial he was transporting. Burgess, Halstead, and Upton head to what should have been the meeting spot for the drop and notice a pet store that they suspect could have been the planned spot to have the capsule removed. Burgess notices a nurse eying them and he takes off when she mentions she needs to talk to him.
The offender crashes, sending his car flying through the air. Upton presses him for information, and he admits to seeing the man’s face when he dropped off the cash. They get the man out just in time as the car explodes. The man describes the suspect and his scars, and Lenox deduces that they seem to be burn scars, but not recent burns. The compression gloves track, as they’re often used in these instances. Voight tasks Atwater with looking into who was tracking Omar before they hired him.
Back at Med, Frost heads in to check on Novak and Violet. He lets them know the observation window is complete, and they’re moving them out of isolation. He sends them out through D-Com; but as they’re about to leave, Novak’s vision begins to blur before she begins seizing and collapses to the ground.
Charles brings Macy the baby blanket, and Macy asks about the woman from the plane. He informs her the woman didn’t make it. Macy admits she thought she heard something on the plane, but she froze and couldn’t move. As they’re talking, Macy begins to struggle to swallow as she begins seizing, and Charles calls for assistance. He needs to intubate her quickly as Ripley arrives to help. Ripley has to cric her as Cruz watches on panicked from his room across the way.
Be sure to refresh for the latest updates, as we'll be recapping the "Reckoning" crossover live as it unfolds across the night!