Thanks to the strict COVID-19 protocols that were put in place for production during the lockdown and then the writers and actors strikes last year, #OneChicago hasn’t been able to produce a three-way crossover since 2019.
But now, with a normal full season finally on the slate, NBC brought Chicago Fire, Chicago P.D. and Chicago Med together in a one-night crossover event, which will rerun tonight.
“Putting together what is essentially a three-hour action movie is an incredibly ambitious task requiring complete coordination across our writers, casts, crews and producers, along with help from the city of Chicago,” said Anastasia Puglisi, Wolf Entertainment Executive Vice President and co-executive producer of the #OneChicago series. “We’re thrilled to have the best talent in every department to meet this challenge, reinforce the #OneChicago brand, and provide our fans with a unique and compelling viewing experience.”
Related: #OneChicago Showrunners Preview the 'Insane' Three-Way Crossover Episodes (Exclusive)
Here is everything we know:
When will the #OneChicago crossover event be released?
The one-night Chicago Fire, Chicago P.D. and Chicago Med crossover event premiered on Wednesday, Jan, 29, and is rebroadcasting on March 12, 2025.
What time will the #OneChicago crossover event take place?
The one-night Chicago Fire, Chicago P.D. and Chicago Med crossover event will begin airing at 8 p.m. ET/PT.
What is the story for the #OneChicago crossover event?
Here is the tune-in information: “When a gas explosion rocks a high-rise, Chicago’s first responders come out in force to rescue hundreds of civilians. It’s the calamity beneath the surface, however, that sends our heroes on a race to save 40 people trapped deep underground, including two of their own.”
"It was a big undertaking but it’s always fun when you get to do these big things," Chicago P.D. showrunner Gwen Sigan told Parade. "We built a lot of it, so that alone was neat. And there’s some huge incidents that you’ll see in the three hours, and just production value’s very high. Hopefully, the fans will love it. It’s definitely a huge ride, action movie, but it’s also got these really interesting emotional stories with pairings from characters from all three shows that you wouldn’t really expect and that don’t get a lot of screen time together usually. So, I think it’ll be fun, it’ll be a good one."
Is there a trailer for the #OneChicago crossover event?
Will the #OneChicago crossover event air in the normal order?
No! Shifting the traditional #OneChicago show order, Chicago Fire will kick things off at 8 p.m. ET/PT., followed by Chicago Med at 9 p.m. ET/PT, and concluding with Chicago P.D. at 10 p.m. ET/PT in its normal timeslot.
8 p.m. ET/PT Chicago Fire season 13, episode 11, "In the Trenches: Part 1"
Chicago's first responders unite in the wake of a catastrophic gas explosion and fire that threaten a city government building. Herrmann reluctantly shadows Pascal, while Violet, Novak, and Dr. Frost take charge of triage efforts on-site.
Jocelyn Hudon, Amy Morton, Christian Stolte , Hanako Greensmith
Photo by: Peter Gordon/NBC
David Eigenberg
Photo by: Peter Gordon/NBC
Dermot Mulroney
Photo by: Peter Gordon/NBC
Hanako Greensmith, Jessy Schram
Photo by: Peter Gordon/NBC
Steven Weber
Photo by: Peter Gordon/NBC
9 p.m. ET/PT: Chicago Med season 10, episode 11, "In the Trenches: Part 2"
Following the subway tunnel collapse, the team works to treat injured passengers and track down the missing offender. Archer and Frost perform a life-saving amputation. Lenox feels the weight of the CPD’s hopes as she fights to save one of their own.
Taylor Kinney
Photo by: George Burns Jr/NBC
Patrick John Flueger, Miranda Rae Mayo
Photo by: George Burns Jr/NBC
Jessy Schram, Toya Turner
Photo by: George Burns Jr/NBC
Jessy Schram
Photo by: George Burns Jr/NBC
Dermot Mulroney, LaRoyce Hawkins, Marina Squerciati
Photo by: George Burns Jr/NBC
10 p.m. ET/PT: Chicago PD season 12, episode 11, "In the Trenches: Part 3"
With the suspects still at large and conditions worsening underground, it’s a race against the clock as a team of first responders from Firehouse 51 and Med work to reach Ruzek, Kidd and the trapped train passengers while the investigation into the assailants comes into focus.
Taylor Kinney, Dermot Mulroney
Photo by: Elizabeth Sisson/NBC
Miranda Rae Mayo
Photo by: Elizabeth Sisson/NBC
Jason Beghe, Amy Morton, Christian Stolte
Photo by: Elizabeth Sisson/NBC
Dermot Mulroney, Jason Beghe
Photo by: Elizabeth Sisson/NBC
What are the fans saying about the crossover?
Read all the fan comments on this Instagram post:
Who is in the cast of Chicago Med?
Steven Weber, Jessy Schram
Photo by: George Burns Jr/NBC
S. Epatha Merkerson as Sharon Goodwin
Oliver Platt as Dr. Daniel Charles
Steven Weber as Dr. Dean Archer
Marlyne Barrett as Maggie Lockwood
Jessy Schram as Dr. Hannah Asher
Luke Mitchell as Dr. Mitch Ripley
Sarah Ramos as Dr. Caitlin Lenox
Darren Barnet as Dr. John Frost
"It’s the Chicago equivalent of Avengers: Endgame," Weber tells Parade about the crossover. "It’s not just a casual, 'Oh, there’s a doctor who’s intermingling with a fire person, and there’s a cop and they’re talking to a fire person. No, this is your favorite characters on this huge ride, the audience is going to be out of their minds with excitement.
"It was an amazing time for me, great fun. And good fun to see old friends and make new ones, but the audience, it’s like going to a #OneChicago amusement park. It’s going to be amazing, and the show threw everything they had into this, all three shows. People are going to be out of their minds, and it actually feels like the old epic event shows that you and I remember from the '70s and '80s, where everybody would gather and talk about it the next day. This is that."
Related: Chicago Med Shocker: Why (Spoiler) Was Fired on Tonight's Episode
Who is in the cast of Chicago Fire?
Joe Miñoso, David Eigenberg, Taylor Kinney
Photo by: George Burns Jr/NBC
Taylor Kinney as Lt. Kelly Severide
Dermot Mulroney as Chief Dom Pascal
David Eigenberg as Lt. Christopher Herrmann
Miranda Rae Mayo as Lt. Stella Kidd
Joe Miñoso as Joe Cruz
Christian Stolte as Randy “Mouch” McHolland
Daniel Kyri as Darren Ritter
Hanako Greensmith as Violet Mikami
Jake Lockett as Sam Carver
Jocelyn Hudon as Lizzie Novak
“It is a three-hour movie that is inclusive of all of your favorite #OneChicago characters,” Miñoso says. “It's a much larger in scale than what we've done before and it is so exciting. I'm really proud to be a part of something that is that ambitious. I think you guys are going to be blown away by it.”
Related: David Eigenberg Is Put to the Test on Tonight's Episode of Chicago Fire (Exclusive)
Who is in the cast of Chicago P.D.?
Marina Squerciati, Jason Beghe
Photo by: Lori Allen/NBC
Jason Beghe as Sgt. Hank Voight
Patrick John Flueger as Officer Adam Ruzek
Marina Squerciati as Det. Kim Burgess
LaRoyce Hawkins as Officer Kevin Atwater
Amy Morton as Desk Sgt. Trudy Platt
Benjamin Levy Aguilar as Officer Dante Torres
Toya Turner as Officer Kiana Cook
Related: Benjamin Levy Aguilar on Torres' Having to Face the Consequences of Past Actions on Chicago P.D.
What was the storyline for the 2019 #OneChicago crossover story?
“Infection, Part I”: In the first part of the crossover event, a rare but deadly bacteria took its toll on victims around the city; Firehouse 51 worked together alongside the CDC to resolve the dangerous situation.
“Infection, Part II”: An apartment complex was forced into quarantine when a deadly virus turned into an epidemic. P.D. chased a lead that could point to bioterrorism, and Will (Nick Gehlfuss) got dangerously close to the suspect.
“Infection: Part III”: After zeroing in on a bioterrorism suspect, the P.D. prepared to undertake their biggest manhunt yet. Upton (Tracy Spirkiadois) was torn between tracking down the perp and providing emotional support to a young girl.
"There’s real terror about what’s going on,” Fire showrunner Derek Haas, who came up with the idea for the three-hour event with executive producer Dick Wolf, told TVLine. “[When] you’re trained to fight fires, you know what you’re dealing with for the most part. You have the right equipment on to deal with temperatures and those things. What you’re not thinking about is microbes. It’s the War of the Worlds kind of scenario — germs, bacteria. So that’s terrifying, and especially seeing how fast it can affect people. This is a biological agent that, within 24 hours, can take someone out. So that’s horrifying.”
Next, Sarah Ramos Reveals the 'Scary' and 'Exciting' Part of Her New Chicago Med Role
