第 12 季 共 12 集
播出时间：2024年1月18日
第 1 集 Barely Gone
播出时间：2024年1月18日
Firehouse 51 is forced to share space with Firehouse 17. Kidd and Herrmann fight over Ritter. An arson case tests Kidd and Severide's relationship. Firehouse 51 says goodbye to one of its own.
第 2 集 Call Me McHolland
播出时间：2024年1月25日
Mouch sets out to change his legacy and nickname. Ritter pushes Herrmann to see a doctor. Brett searches for the perfect wedding venue.
第 3 集 Trapped
播出时间：2024年2月1日
As the courageous firefighters, rescue squad and paramedics of Chicago Firehouse 51 head first into danger, bravely fighting to save the people of their city from peril, they also forge deep, unbreakable bonds with each other.
第 4 集 The Little Things
播出时间：2024年2月8日
Julia spends a couple of days at 51. Boden's stepson, James, returns desperate for Boden to help his mother. After a little girl starts a fire in her backyard, Kidd and her team decide to dig deeper.
第 5 集 On the Hook
播出时间：2024年2月22日
After their defibrillator malfunctions on a call, Brett and Violet search for answers. Herrmann tries to find the perfect home for his new recliner. A secret from Gibson's past comes to light.
第 6 集 Port in the Storm
播出时间：2024年2月29日
Firehouse 51 welcomes back some familiar faces and says goodbye to Brett. Violet scrambles to decorate Brett's wedding venue. A call at the expo center takes a shocking turn.
第 7 集 Red Flag
播出时间：2024年3月21日
Violet clashes with her new partner. Severide discovers a hidden stash of money on a call and squares off against the cops working the case. Mouch gets a parking ticket.
第 8 集 All the Dark
播出时间：2024年3月28日
A hazmat call at a dialysis center leads to a shocking discovery. Boden clashes with Paramedic Chief Robinson. Carver notices a concerning change in Gibson's behavior.
第 9 集 Something About Her
播出时间：2024年4月4日
Severide, Kidd and Van Meter investigate a fire at a recording studio. Kylie helps James keep a secret from Boden. Mouch struggles to maintain boundaries with a paramedicine client.
第 10 集 The Wrong Guy
播出时间：2024年5月2日
Severide steps in as ranking officer at 51. Kidd fights to save her Girls on Fire program. Cruz's family is threatened when someone from Javi's past resurfaces.
第 11 集 Inside Man
播出时间：2024年5月9日
Severide goes for an unexpected ride on Truck 81. Ritter's worlds collide when his secret cop boyfriend helps 51 track down Severide and the missing rig.
第 12 集 Under Pressure
播出时间：2024年5月16日
