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.

The crossover continues on Chicago Med S10E11 In the Trenches (II) and Chicago P.D. S12E11 In the Trenches (III).

Chicago Fire Season 13 Episodes...

• s13e01 - A Monster in the Field
• s13e02 - Ride the Blade
• s13e03 - All Kinds of Crazy
• s13e04 - Through the Skin
• s13e05 - Down the Rabbit Hole
• s13e06 - Birds of Prey
• s13e07 - Untouchable
• s13e08 - Quickstand
• s13e09 - A Favor
• s13e10 - Chaos Theory
• s13e11 - In the Trenches (1)
• s13e12 - Relief Cut
• s13e13 - Season 13, Episode 13
• s13e14 - Season 13, Episode 14

Chicago Fire Show Summary

No job is more stressful, dangerous or exhilarating than those of the Firefighters, Rescue Squad and Paramedics of Chicago Firehouse 51. These are the courageous men and women who forge headfirst into danger when everyone else is running the other way. But the enormous responsibilities of the job also take a personal toll.

With big reputations and hefty egos, the pressure to perform and make split-second decisions is bound to put squad members at odds. When a tragedy claims one of their own, there's plenty of guilt and blame to go around. In the middle of a divorce, Lt. Matthew Casey tries to go about business as usual, but can't help butting heads with the brash Lt. Kelly Severide of the Rescue Squad - and each blames the other for their fallen team member. When it's "go-time", though, they put their differences aside and put everything on the line for each other. This is a look inside one of America's noblest professions.