
Preview — One Chicago Crossover Event: In the Trenches
The much-anticipated One Chicago crossover is upon us, bringing the characters from Chicago Fire, Chicago Med, and Chicago P.D. together for a special three-hour event.
The crossover, titled “In the Trenches,” will kick off with Chicago Fire as a gas explosion threatens a high-rise government building. The fallout goes beyond that, though, when a subway tunnel collapses, and even more people are put in danger.
Logline: 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.
Much like the One Chicago crossover event of 2019, this crossover will feel closer to a three-hour movie than three separate television episodes.
The event will shift the traditional #OneChicago show order, as well. It will begin with Chicago Fire, at 8/7c, then move into Chicago Med at 9/8c, and finally Chicago P.D., at 10/9c.

If “In the Trenches” is similar to “Infection,” then it will be difficult to tell where one show begins and another ends.
Check out the episode photos and trailer below for a super-sized preview of the three-hour crossover event, “In the Trenches.”
Chicago Fire Season 13 Episode 11 Description (In the Trenches, Part I):
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.
Photos from Chicago Fire Season 13 Episode 11:
Chicago Med Season 10 Episode 11 Description (In the Trenches, Part II):
Following the subway tunnel collapse, Ruzek and Kidd 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.
Photos from Chicago Med Season 10 Episode 11:
Chicago P.D. Season 12 Episode 11 Description (In the Trenches, Part III):
With the suspects still at large and conditions worsening underground, first responders race against the clock to reach the trapped victims, while the investigation into the assailants comes into focus.
Photos from Chicago P.D. Season 12 Episode 11:
One Chicago Crossover Event Trailer:

What are your hopes for the One Chicago crossover? Share your thoughts with us in the comments below!
The three-hour One Chicago crossover event airs Wednesday, January 29th, beginning at 8/7c on NBC.
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