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After more than a five - year crossover drouth , the threeOne Chicagoshows — Chicago Fire , Chicago PD , andChicago Med — will unite once again during the 2024–2025 boob tube time of year , and it could n’t have come at a good time for all three serial . TheOne Chicagouniversedebuted withChicago Firein 2012 , and following its instant success , NBC apace put together a dealership . Since the premier ofChicago PD(and afterwards the debut ofChicago Med ) , the three shows have crossed over on multiple affair , whether it ’s for a big event or a quick cameo .
accord toTVLine , the originative mind behind theOne Chicagofranchise are developing a one - dark , three - episode crossover result involvingChicago Med , Chicago Fire , andChicago PD . A date has not been foretell as of the writing of this article , but a plotline has . Thestory for the firstOne Chicagocrossover in five yearswill begin withan office edifice explosion that sends the entire city into pandemonium . The firefighters , police officers , doctors , and other first responder will have to come up together to save up lives and come upon who ’s responsible .
Why Hasn’t A 3-Show One Chicago Crossover Happened Since 2019?
COVID-19 Was A Big Factor
With more than 680 episodes and 26 season under its belted ammunition , theOne Chicagofranchiseis doubtlessly one of the most successful single on mesh goggle box . So , it create sense why NBC would need to take full advantage of its power and release crossing over . However , follow " Infection " in October 2019,Chicago Fire , Chicago PD , andChicago Medhaven’t had a three - part crossoverevent . There are many reason for this five - year foramen , but most of them circle back to the COVID-19 pandemic .
TheOne Chicagocharacters from dissimilar boob tube shows could n’t interact , and every serial publication did its own thing for a while .
COVID-19 keep out down almost all film and television productions in the spring of 2020 . When they were able to come back , most mould and crew had to follow sealed protocols to ensure everyone ’s safe . alas , these restrictions signify that a three - part crossover betweenChicago Fire , Chicago PD , andChicago Medwasn’t logical . So , bring the three show together was pushed to the back - burner . TheOne Chicagocharacters from different TV showscouldn’t interact , and every series did its own affair for a while . Plus , the WGA and SAG - AFTRA strikes in 2023 further delay any potential plan for crossovers .

Sam Carver is move through it in Chicago Fire season 13 on NBC , but his stumble are the best thing for his lineament in the long rivulet .
Why One Chicago Needs Its 3-Show Crossover
Crossovers Have Become A Cornerstone Of The NBC Franchise
It make sense why it has been five age since the last bigOne Chicagocrossover . However , that does n’t make the frustration from the lack of them go away . It ’s exciting for fans to see their favourite characters from dissimilar telly series interact with one another and act upon together in one major story . Before COVID-19,crossovers were a significant part of the franchise , and it has n’t felt right on ever sinceOne Chicagoentered this drought . Sure , the cast ofChicago Fire , Chicago PD , andChicago Medcan survive ( not on the nose thrive ) on their own , but the shows doubtlessly benefit from crossovers .
One ChicagoTV Show
Season(s )

episode
Creators
Backdoor Pilot Premiere Date

Release Date
Finale Date
Chicago Fire

Custom Image by Ana Nieves
13
252
Michael Brandt and Derek Haas

Developed by Derek Haas and Michael Brandt, One Chicago is a multi-series television franchise that combines various public service/government organizations in Chicago, Illinois. Each series shares a timeline and universe, with multiple characters crossing over occasionally. The One Chicago universe began with Chicago Fire in 2012, with P.D., Med, and Justice comprising the remainder of one of NBC’s most successful primetime franchises.
N / A
October 10 , 2012
TBA

Chicago PD
12
221

Dick Wolf and Matt Olmstead
May 15 , 2013
January 8 , 2014

Chicago Med
10
176
April 7 , 2015
November 17 , 2015
Chicago Justice
1
Dick Wolf
May 11 , 2016
March 1 , 2017
May 14 , 2017
It goes without saying that the timbre of each series has decrease in the past few years . They have n’t been unwatchable . However , Chicago Fire , Chicago PD , andChicago Medhave all experient heartbreaking rove exitsand frustrative / repetitive / wordy storylines . therefore , One Chicagoneeds a crossover now more than ever , and , thankfully , prayers have been answer .
Developed by Derek Haas and Michael Brandt , One Chicago is a multi - series television franchise that fuse various public serve / government organizations in Chicago , Illinois . Each series shares a timeline and universe of discourse , with multiple fibre crossing over now and again . The One Chicago world begin with Chicago Fire in 2012 , with P.D. , Med , and Justice consist the remainder of one of NBC ’s most successful primetime franchises .
reservoir : TVLine