Original air date: 10/03/2018 Runtime: 40:50 min. Firehouse 51 is faced with a daunting challenge when an out of control blaze consumes a 15-story apartment complex, trapping victims on the top floors. Complicating the rapidly escalating situation, members soon discover that someone close to home may be one of the trapped victims.
Original air date: 11/07/2018 Runtime: 41:27 min. Severide faces some major adversity and Kidd is on a mission to help in any way she can. Following a car accident rescue involving a teenage girl and her young sister, a suspicious Brett has an unsettling feeling there is more to the story than what appears on the surface.
Original air date: 01/16/2019 Runtime: 41:46 min. Severide's side project of fixing the boat for a wealthy acquaintance turns complicated and personal. Meanwhile, his relationship with Kidd is at a crossroads. Brett helps Casey search for a new apartment and Firehouse 51 decides to enter Tuesday in a dog competition.
Original air date: 01/23/2019 Runtime: 41:46 min. When the firehouse is called to a motorcycle crash, Casey and Severide sense that the details don't add up and work to determine exactly what transpired. A rift develops between Mouch and Otis. Brett, Foster and Kidd work to secretly fix a dent in the ambulance bumper they believe they unknowingly caused.
Original air date: 02/13/2019 Runtime: 40:13 min. Brett, Foster and Kidd take a road trip to Indiana for a getaway and encounter a bus accident involving a boy's hockey team that will leave them scrambling and relying on their instincts to save those hurt in the accident. The rest of Firehouse 51 competes in the annual Chili Cook Off.
Original air date: 02/20/2019 Runtime: 41:58 min. In the first part of a crossover with "Chicago P.D.," a spate of robberies comes to light after a firehouse lockbox key goes missing. CPD's Voight has suspicions that a firefighter may be involved, and with Boden's support he recruits Cruz to go undercover and help sniff out any suspicious activity.
Original air date: 02/27/2019 Runtime: 41:54 min. During an emergency call, an unsuspecting Lt. Casey suddenly finds his life in peril. Grissom (guest star Gary Cole) warns the firehouse that they will need to gear up for a performance evaluation. Otis discovers he won a raffle prize at a recent fundraiser and Brett is met with challenges in her personal life.