4 seasons available
A new face at Firehouse 51 causes tension, while rising chaos in the city brings new challenges to the team; Herrmann stalls on plans of relinquishing his office to Mouch.
Vasquez fights to prove himself at 51; Violet and Novak pursue a troubling mystery; Herrmann is on a quest to keep Molly's profitable.
When city budget cuts stretch crews thin, Pascal takes matters into his own hands; Vasquez looks to an old friend for help; an incident in the field hits close to home for Violet.
Firehouse 51 must band together after a devastating fire catches them off guard; Vasquez continues his quest for answers; Violet and Novak face an unexpected roadblock in the new training protocol.
Cruz hunts for the identity of an unknown ally; Mouch takes steps to help a friend; Vasquez must make a difficult choice.
A traffic jam forces Violet and Novak to take drastic measures to save a patient; Severide shadows Pascal for a day; Kidd goes the extra mile for Isaiah.
Severide investigates a suspicious high school fire; Novak gets an unexpected call; Violet brings a 51 firefighter onboard the ambulance for a shift.
When an act of arson harms someone close to the Firehouse 51 family, Severide must track down the perpetrator; impending budget cuts push Mouch and Pascal to get creative.
A member of the Firehouse 51 family remains in peril; Cruz lends a hand to Severide in the ongoing investigation.
Novak explores a new romantic connection; Vasquez deals with the aftermath of his father's recent release.
Herrmann grows uneasy when a local accident attorney inserts himself into a routine call; Firehouse 51 gets a visitor.
Pascal finds himself under intense scrutiny when a member of the firehouse is injured on a call; Herrmann grapples with family issues.
Firehouse 51 is called to an airfield when a passenger jet suddenly goes silent midair, triggering a high-stakes emergency; their discovery cracks open a bigger and deadlier mystery with consequences that could put countless lives in jeopardy.
Severide is on high alert to track down a reckless driver who puts one of their own in harm's way; a member of Firehouse 51 struggles with a potentially life-changing decision.
A car crash puzzles Kidd and Vasquez; Herrmann gets his chance in the spotlight; Violet and Novak deal with a moral dilemma.
Severide is forced to overcome obstacles at the firehouse; Cruz finds himself at a loss amid the new changes in his family.
After a devastating fire erupts at a surgery center, Kidd works to hunt down the true cause; Violet, Novak and Vasquez grapple with shifting relationships; Molly's hosts its first trivia night.
While in the field, Violet and Novak are thrust into a dangerous and rapidly escalating situation, forcing them to rely on their instincts to protect both themselves and a vulnerable patient.
Severide investigates a fire at an abandoned store inhabited by squatters; Mouch pens a memoir about his life.
Severide is forced to crack open a cold case buried for decades; a routine call hits too close to home for Novak.
Severide and Kidd welcome a surprise visitor; Herrmann and Cindy renew their vows; Mouch receives some encouraging news.
Severide gets wrapped up in an Illinois State Police investigation after discovering illegal guns on a call; a bird harasses Mouch on the apparatus floor; Kidd keeps an eye on Carver as his attitude worsens.
Pascal and Severide revisit the storage facility fire in hopes of uncovering new evidence; Cruz helps Mouch take his studying to the next level; Novak prepares a proposal for Chief Robinson for a whole blood program.
Herrmann and Mouch prepare to take their officer exams; Cruz receives a chilling omen; Carver takes care of a dog after its owner is injured on a call.
Cruz's past comes back to haunt him; Severide prepares to teach an arson class at the academy; Mouch searches for a victim's next of kin.
The team responds to a crisis at a community center; Severide is forced to investigate one of his own squad members; Kidd helps a teacher going through a post-incident spin-out.
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.
Herrmann investigates the rise in missing fire hydrants and teams up with Kylie to track them down; Kidd's cousin comes to town, revealing surprising family history; Violet and Novak treat the victim of a birthday cake smash gone awry.
After a daring rescue at an adventure park, Kidd asks Severide to create a ropes course for Girls on Fire; Violet's former nemesis returns, pleading for her help; Herrmann creates a signature cocktail for Molly's.
A surprise visitor from Novak's past joins Ambo for a late-night ride-along; Herrmann faces a mountain of Chief-level training records and incident reports; Violet catches Carver in a lie.
Kidd and Severide eagerly await big news; Pascal searches for the perfect anniversary gift.
In the face of adversity, Pascal searches for justice; Violet struggles to write a letter to Carver; Damon returns to the floater pool hoping to secure a permanent spot at 51.
Kidd connects with a troubled teen interested in Girls on Fire; Cruz, Capp and Tony eagerly wait to try out Squad's new saw; Violet and Novak are stumped by a bodybuilder who passed out at the gym.
Deputy Commissioner Boden returns to Firehouse 51 to investigate a disastrous firefight and the surrounding mystery that left one of their own in peril.
Severide investigates an old house fire from 10 years back in which Kidd had responded; Carver and Violet search for a mystery medic who abandoned a victim; Novak looks for a roommate.
With the crew stretched thin, a performance efficiency expert evaluates Firehouse 51; Kidd and Severide bond with the mother of the baby they hope to adopt.
Kidd strengthens her bond with Natalie during a road trip; Severide investigates a car fire and uncovers surprising evidence; Violet receives a career opportunity after being featured in a local newspaper.
Lt. Severide is targeted by an arsonist; Battalion Chief Boden clashes with Gail McLeod; the anniversary of Andy's death; Shay has suspicions; Mari visits Mouch.
Casey struggles with his new responsibilities; Severide dreads the arsonist's next attack; Mouch starts campaigning; Dawson and Shay decide they need to get out more.
Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.
Severide wants to implicate the serial arsonist; Dawson and Shay face the unexpected on a routine call; suspicions indicate Clarke is the mole; Mouch campaigns for union president.
McLeod pushes Boden toward an early retirement and chooses a potential replacement; all make known their disdain for the mole; Shay enjoys a full social life.
Severide comes across a boy in need of help while out on a jog; Boden and McLeod clash over the future of the firehouse; Mouch and Greg Sullivan debate on Otis' podcast.
The firehouse crew goes to the scene of a railroad accident; Boden must make a big decision about his future; Severide learns more about the woman he saw with his father; Shay and Dawson continue to butt heads.
The shooting of a child in their neighborhood forces Cruz and his brother to think about the gang; Isabella gets Mills to dress up for a gala; Casey feels sad he will be seeing Dawson less; Shay gets in deeper with Devon.
Lt. Casey must work with Voight and the Intelligence Unit; Shay grows increasingly excited about the prospect of motherhood; everyone comes together to support the opening of Molly's.
The squad must help defuse a volatile situation at the jail; Shay continues to be hopeful about motherhood; Herrmann's wife goes into labor; Mills and Dawson face important decisions.