Episode 1 | A Monster in the Field

A new chief shakes things up at Firehouse 51. Violet and Novak work to uncover the truth behind a car crash. Cruz keeps a watchful eye on Severide and Damon's growing bond.

Episode 2 | Ride the Blade

After Damon disobeys Kidd's orders in a call, he turns to Severide to protect him. Hermann searches for the perfect scent to spice things up with Cindy.

Episode 3 | All Kinds of Crazy

Severide and Van Meter investigate a fire at a family-owned restaurant. Pascal questions Kidd's leadership.

Episode 4 | Through the Skin

Violet risks her job to deliver a baby on a tragic call; Mouch, Capp and Tony help Cruz track down Javi's stolen bike; Damon's departure weighs on Severide.

Episode 5 | Down the Rabbit Hole

Kidd and Severide investigate a trucking company responsible for a string of accidents; Herrmann recruits Kylie to help get new radios; Firehouse 51 celebrates Violet's birthday; Carver's allegiances are torn.

Episode 6 | Birds of Prey

State Police impede Severide's investigation of a suspicious fire at a storage facility that uncovered ghost guns, Carver is back on thin ice with Kidd and Mouch has a winged nemesis at the station.

Episode 7 | Untouchable

Pascal and Severide revisit a storage facility fire searching for new evidence. Cruz aids Mouch's exam preparation. Novak proposes a whole blood program to Chief Robinson.

Episode 8 | Quickstand

Herrmann and Mouch study for officer exams. Cruz gets an ominous sign. Carver cares for a dog whose owner was hurt during an emergency call.

Episode 9 | A Favor

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.

Episode 10 | Chaos Theory

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.

Episode 11 | 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...

Episode 12 | Relief Cut

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 ...

Episode 13 | Born of Fire

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.

Episode 14 | Bar Time

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.

Episode 15 | Too Close

Kidd and Severide eagerly await big news; Pascal searches for the perfect anniversary gift.

Episode 16 | In the Rubble

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.

Episode 17 | A Beast Like This

Kidd helps a teen drawn to Girls on Fire, while Cruz, Capp and Tony anticipate testing Squad's new saw. Violet and Novak puzzle over a collapsed bodybuilder at the gym.

Episode 18 | Post-Mortem

Deputy Commissioner Boden returns to Firehouse 51 to investigate a disastrous firefight and the surrounding mystery that left one of their own in peril.

Episode 19 | Permanent Damage

Episode 20 | Episode #13.20

Episode 21 | Episode #13.21