Chicago Firemarked a major milestone with its 300th episode, which aired last night on NBC, but the celebration also signaled the departure of an original star. The procedural drama returned for its fifteenth season on October 7, 2026, with familiar faces: Taylor Kinney as Captain Kelly Severide; David Eigenberg as Firefighter Christopher Herrmann; Joe Miñoso as Firefighter Josef “Joe” Cruz; Christian Stolte as Lieutenant Randall “Mouch” McHolland; Miranda Rae Mayo as Lieutenant Stella Kidd; and Hanako Greensmith as Paramedic in Charge Violet Mikami.
The season has also introduced several changes, from major character departures to leadership shifts. Victor Teran took over as showrunner, succeeding Andrea Newman, who stepped down at the end of Season 14. Dermot Mulroney also departed after two seasons as Battalion Chief Dominic “Dom” Pascal. However, the biggest development came in Chicago Fire‘s 300th episode, titled “Three Hundred.”
As Deadline confirmed, Miñoso, who has played firefighter Joe since Season 1, exited the seriesin Season 15, Episode 5, with his character’s storyline coming to a bittersweet conclusion. In the Chicago Fire Season 15 episode, Joe decides not to return to Firehouse 51 and instead prioritizes his family, especially after his wife, Chloe (Kristen Gutoskie), gives birth. He therefore chooses to relocate with his family to Minneapolis, where they can be closer to Chloe’s mother and where he can continue his rehabilitation at a specialized recovery center.
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Five wards on call
TV/Medical Drama/Shift Assignment
Sinus rhythm · Bay 0172 BPM
PTMC CGH GSM PPTH SHH
Collider · TV Medicine Which Fictional Hospital Would You Work Best In? Eight questions · five wards · one assignment
Five hospitals. Five completely different ways medicine goes sideways on television: brutal, chaotic, romantic, brilliant and ridiculous. Only one of them is the ward your instincts were built for, and eight questions will work out exactly where you belong. Wards accepting
PTMCThe Pitt
CGHER
GSMGrey’s Anatomy
PPTHHouse
SHHScrubs
Question 01 of 08APPROACH
01 A critical patient comes through the door. What is your first instinct? Medicine under pressure reveals who you really are.
Keys 1 to 5 or A to E · Enter to advance
Question 02 of 08MOTIVATION
02 Why did you go into medicine in the first place? The honest answer says more about you than the one you would give in an interview.
Keys 1 to 5 or A to E · Enter to advance
Question 03 of 08COLLEAGUES
03 What do you want most from the people you work with? Who you want beside you under pressure is who you are.
Keys 1 to 5 or A to E · Enter to advance
Question 04 of 08LOSS
04 You lose a patient you fought hard to save. How do you carry it? Every doctor who has worked a long shift has had to answer this one.
Keys 1 to 5 or A to E · Enter to advance
Question 05 of 08STYLE
05 How would your colleagues describe the way you work? Your reputation on the floor is usually more accurate than your self-image.
Keys 1 to 5 or A to E · Enter to advance
Question 06 of 08RULES
06 How do you feel about hospital protocol and procedure? Every institution has rules. What you do with them is a choice.
Keys 1 to 5 or A to E · Enter to advance
Question 07 of 08TOLL
07 What does this job cost you personally? Nobody works in medicine without paying a price. What is yours?
Keys 1 to 5 or A to E · Enter to advance
Question 08 of 08PURPOSE
08 At the end of a long shift, what keeps you coming back? The answer to this one is the most honest thing about you.
Keys 1 to 5 or A to E · Enter to advance
Assignment madeYou belong in
PTMC · Admitted The Pitt Pittsburgh Trauma Medical Center This ward asks whether you can stay in the room for the whole shift, and come back tomorrow.
You are built for the most unsparing version of emergency medicine television has shown, the one that puts you inside a single long shift and does not let you look away. You need your work to be real rather than romanticized, and you find your purpose inside the work itself rather than in the chaos around it. You have made peace with a job that takes from you constantly and gives back in ways that are harder to name. What this ward asks of you
Meaning over drama, honesty over aesthetics.
The discipline to stay present when the department is at its worst.
A tolerance for weight that does not get put down at the end of the day.
From the Collider file
Each episode covers roughly one hour of the same emergency-department shift, in order.
Noah Wyle has now won the lead drama actor Emmy for it twice, in 2025 and again in 2026.
It reunites the ER team of Wyle, John Wells and R. Scott Gemmill, thirty years on.
Fully present No romance Built to endure
CGH · Admitted ER County General Hospital, Chicago This ward asks whether you can hold the line long enough for the next person to take it.
You are the one who keeps the whole floor moving. Not the most brilliant in the room, possibly the most essential. You show up, do the work, absorb the losses and come back the next day without needing the job to be anything other than what it is. You care about patients as individual people rather than as cases to solve or dramas to live inside, and you believe in the system even on the days it fails you. What this ward asks of you
Reliability above brilliance, every single shift.
Faith in a structure that is visibly imperfect.
The stamina to treat the hundredth patient like the first.
From the Collider file
Fifteen seasons and 331 episodes, from 1994 to 2009, created by Michael Crichton.
It holds the record for the most Emmy nominations of any drama series, with 124.
George Clooney, Julianna Margulies and Noah Wyle all broke out of County General.
Shows up Endurance Patient first
GSM · Admitted Grey’s Anatomy Grey Sloan Memorial, Seattle This ward asks whether you can do the work with your whole self in the room.
You came to medicine with everything you have, your ambition, your feelings, your relationships and your history, and you have never quite managed to leave any of it at the door. You form deep attachments to the people you work with, and your personal and professional lives stay permanently, chaotically tangled. That tangle drives both your worst disasters and your most remarkable saves, because you understand that extraordinary medicine often happens where clinical skill meets human connection. What this ward asks of you
A willingness to feel all of it rather than seal any of it off.
Colleagues who become family, with everything that costs.
Comfort with mess, in the OR and everywhere else.
From the Collider file
Shonda Rhimes’ series passed ER to become the longest-running primetime medical drama
on US television.
It is on season 22, with ABC having already renewed it for a twenty-third.
Ellen Pompeo has played Meredith Grey across three decades of television.
Feels everything Found family Beautifully messy
PPTH · Admitted House Princeton-Plainsboro Teaching Hospital This ward asks whether you can be right when everyone in the room needs you to be wrong.
You are drawn to the problem above everything: the symptom that does not fit, the diagnosis hiding underneath the obvious one. The patient as a person is not your first motivation, though you are capable of caring more than you would admit. You work best when the stakes are highest and the standard answer is wrong. Princeton-Plainsboro exists to house one extraordinary and impossible mind, and everyone near it is there because they can keep up. What this ward asks of you
Thinking harder than anyone else in the room, then defending it.
A high tolerance for being disliked while you are right.
Interest in the puzzle that outlasts your interest in being comfortable.
From the Collider file
Eight seasons built on Sherlock Holmes: House and Holmes, Wilson and Watson, and an
apartment at 221B.
Hugh Laurie taped his audition in a hotel bathroom in Namibia while shooting another film.
By 2008 it was the most-watched television show on earth, with an audience around 82
million.
Chases the puzzle Difficult on purpose Usually right
SHH · Admitted Scrubs Sacred Heart Hospital, California This ward asks whether you can hold the tragedy and the absurdity at the same time.
You understand that medicine is devastating and ridiculous in roughly equal measure, and that the only sane response is to carry both at once. You are warm, self-aware and funnier than most people in your field. You use humor to get through terrible moments, which at Sacred Heart is a survival strategy rather than a flaw. You lean on the people around you and let them lean back, because here the laughter and the grief are inseparable. What this ward asks of you
Humor that never curdles into cruelty.
The honesty to admit you are still learning how to do this.
People you can lean on, and the willingness to be leaned on.
From the Collider file
Nine seasons from Bill Lawrence, filmed largely inside a real decommissioned hospital in
North Hollywood.
Working doctors have repeatedly named it the most accurate medical show on television.
Zach Braff, Donald Faison and Sarah Chalke returned for an ABC revival that premiered in
February 2026.
Laughs to cope Still learning Leans on people
Shift report · your top three
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Chart signed byCOLLIDERCollider.com · The TV Desk
What Happened in ‘Chicago Fire’s 300th Milestone Episode?
Since the Chicago Fire Season 15 premiere, Joe hasn’t had it easy after suffering a spine injury. In “Three Hundred,” he shows his progress in physical therapy, demonstrating how far he’s come in learning to walk again. He also visits his colleagues at Firehouse 51, expressing hope that he can return to duty within a few months.
Meanwhile, Chloe, who is heavily pregnant with twins, struggles with the responsibilities of caring for their family while her husband recovers. She airs her frustrations to Joe, during which she goes into labor and eventually welcomes their twin daughters. The newborns’ arrival prompts Joe to begin reconsidering his plans to return to firefighting.
Dr. Dean Archer (Steven Weber) from Chicago Med later visits the family and discusses Joe’s recovery. He explains that Joe has a promising chance of returning, but although the news initially gives Joe hope, his family’s reaction makes him think twice. Even his young son, Otis, asks why someone else’s father cannot do the job, leading Joe to recognize how much his family needs him at home.
Joe later tells Severide (Kinney) he will not be returning to Firehouse 51 and explains why. But before leaving, he shares an emotional farewell with his colleagues and visits the memorial for his late friend and former firefighter, Brian “Otis” Zvonecek (Yuri Sardarov).
Chicago Fire airs Wednesdays on NBC, with new episodes streaming on Peacock the following day.
