E1 - Rattle Second City

Aired: November 11, 2020

Firehouse 51 welcomes a new member to the team, whose presence could provide some complications. Brett's leadership shines during a scary call. Boden sees great potential in Kidd and proposes an idea that could have lasting repercussions.

E2 - That Kind of Heat

Aired: November 18, 2020

Brett and Mackey find their lives in peril. Casey and Brett tread in unfamiliar territory. Severide chases a memory while Kidd adeptly solves a firehouse problem. Ritter puts himself in harms way during a harrowing call.

E3 - Smash Therapy

Aired: January 13, 2021

A mishap on the aerial ladder in the midst of a fire rescue leaves Mouch shaken and questioning his abilities. Kidd looks for support from Severide while Casey and Brett discuss their future.

E4 - Funny What Things Remind Us

Aired: January 27, 2021

While completing a task assigned by headquarters, Boden makes an unforeseen connection. Gallo is forced to make a surprise rescue to one of their own when the firehouse is called to the site of a construction explosion. Mouch reignites an old feud.

E5 - My Lucky Day

Aired: February 03, 2021

When Firehouse 51 is called to the scene of a dangerous blaze inside a 10-story storage unit, Herrmann and Cruz find themselves trapped inside a freight elevator with all communications cut off.

E6 - Blow This Up Somehow

Aired: February 10, 2021

Gallo makes a split-second decision during a dangerous fire rescue leaving Casey steaming that his direct orders were not obeyed. Kidd feels a strain in her relationship with Severide. Brett and Mackey find themselves searching for answers following a series of suspicious calls.

E7 - Dead of Winter

Aired: February 17, 2021

A fire at a homeless encampment leaves Severide and Casey searching for answers. Cruz is shaken up after a close call. Ritter lends a helping hand to a victim.

E8 - Escape Route

Aired: March 10, 2021

A call to a familiar location brings back mixed emotions for Severide. Herrmann heads out for a vacation. Casey is not thrilled with his replacement.

E9 - Double Red

Aired: March 17, 2021

Mouch, Gallo, Ritter and Mackey report for training. A nasty blow to the head brings Casey unimaginable pain.

E10 - One Crazy Shift

Aired: March 31, 2021

A series of suspicious fires sends 51 on a search for the cause. Casey continues down a troubling path. Mouch is looking to make his long-awaited dream come true.

E11 - A Couple Hundred Degrees

Aired: April 07, 2021

A new recruit with ties to the CFD tests Serveride's patience. Violet receives a mysterious note that sends her and Brett on a hunt for the person who wrote it.

E12 - Natural Born Firefighter

Aired: April 21, 2021

While Mouch makes an incredible save, all eyes are on a mystery man who helped save his neighbor. Casey worries about his future at the CFD.

E13 - Don't Hang Up

Aired: May 05, 2021

A mysterious caller who is in danger relies on Kidd to help save her and her brother. The firehouse helps Cruz get ready for fatherhood.

E14 - What Comes Next

Aired: May 12, 2021

A fire breaks out at a pet food factory and Casey and Severide help the owner, Pete, get to the bottom of it. The annual garage sale takes place at 51 and everyone is on edge.

E15 - A White-Knuckle Panic

Aired: May 19, 2021

Severide and Casey try to find the best fit for Kidd. Ritter, Gallo and Violet help plan an event for Mouch.

E16 - No Survivors

Aired: May 26, 2021

The firehouse reacts to some exciting news, a mysterious stranger arrives and a shocking call takes Severide's breath away.