
13 Episodes
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Firehouse 51 faces a season of significant change and danger. The core premise revolves around the firefighters of Station 51 as they navigate emergencies, personal lives, and professional challenges. Key figures include Chief Boden, a respected leader; Stella Kidd, a dedicated firefighter and leader; and Sylvie Brett, a paramedic whose personal life takes center stage.
The season's central conflict sees the team dealing with arson investigations, dangerous rescues, and internal strife. A young girl's house burns down with her mother inside, highlighting the devastating consequences of arson. Later, a shocking revelation emerges when Gibson admits to killing a man in a boxing match. The season culminates with Sylvie Brett marrying Matt Casey and leaving Chicago, a major personal shift for the firehouse.
In the season's dramatic conclusion, Chief Boden is promoted to Deputy Commissioner, marking a significant career advancement but also a farewell to his beloved firehouse. The season ends with the team facing new challenges and the departure of a beloved member.
Season 12 of Chicago Fire covers episodes 1-13. Here's everything that happened:
Season 12, Episode 1: Barely Gone - Firehouse 51 is forced to share space with Firehouse 17 after a kitchen fire. Gallo says goodbye as he moves to Michigan to help his aunt. Severide investigates an arson case, causing tension with Kidd. Boden and Herrmann catch the arsonist. Brett's upcoming wedding to Casey is confirmed.
Season 12, Episode 2: Call Me McHolland - Mouch seeks to rebrand himself, pushing to be called McHolland and shedding his "couch" legacy. Ritter urges Herrmann to address his hearing issues, which almost endanger Kylie during a call. Cruz considers leaving 51 to take the lieutenant's test. Brett continues her search for the perfect wedding venue. The episode concludes with Herrmann learning he needs hearing aids.
Season 12, Episode 3: Trapped - Brett and Violet pursue a suspected kidnapping after a woman mouths "help me". Mouch investigates the new firefighter, Gibson. Herrmann uses hearing aids. The woman is rescued after a dangerous situation at a grocery store. Severide departs for OFI duty. Carver and Brett kiss. Cruz reconsiders taking the lieutenant's test.
Season 12, Episode 4: The Little Things - Kidd investigates a young arson suspect, Harper, whose house goes up in flames with her mother inside. Boden helps his stepson, James, whose mother is in jail for fentanyl trafficking. Violet and Carver's relationship deepens. Harper's mother is hospitalized, and Stella vows to get Harper help.
Season 12, Episode 5: On the Hook - After a defibrillator malfunctions during a rescue, Brett and Violet investigate, facing potential blame. Gibson reveals to Carver that he killed a man in a boxing match, explaining his guarded nature. Herrmann seeks the perfect spot for his new recliner. The episode concludes with Brett's career potentially jeopardized and Gibson opening up about his past.
Season 12, Episode 6: Port in the Storm - Firehouse 51 prepares for Brett's wedding as Violet decorates the fish store venue. A call to a bridal expo turns dangerous when Sylvie discovers a robbery; a thief holds her at gunpoint. Casey and Boden arrive to subdue the suspect. Sylvie and Matt then get married in a beautiful ceremony, and they leave Chicago.
Season 12, Episode 7: Red Flag - Violet clashes with her new partner, Lennox, while Severide discovers a stash of money at a fire. He helps a teen, Maya, connected to the money, who is being threatened by dangerous people. Mouch fights a parking ticket. Maya's grandmother uses the money to bail out her brother, and they disappear. Lennox files a complaint against Violet.
Season 12, Episode 8: All the Dark - A hazmat call reveals a dialysis center's shocking secret. Boden clashes with Chief Robinson, who placed Lennox at 51 to undermine him. Carver notices Gibson's concerning behavior, stemming from drug use. Gibson seeks help for his addiction, and Robinson is removed from the Fire Chief shortlist.
Season 12, Episode 9: Something About Her - Severide, Kidd, and Van Meter investigate a recording studio fire, discovering the victim was intentionally burned after stealing equipment. Kylie assists James with a secret from Boden. Mouch struggles with boundaries with a client. The episode concludes with the arson solved and the true culprit revealed.
Season 12, Episode 10: The Wrong Guy - While Severide is acting ranking officer, Kidd fights to save her Girls on Fire program. Cruz deals with a threat related to Javi's past. Funding for Girls on Fire is restored. Cruz sets up a sting operation, and Javi learns the truth about his "uncle".
Season 12, Episode 11: Inside Man - Severide is kidnapped after armed men steal Truck 81. Ritter's cop boyfriend helps locate the rig. Severide thwarts a terrorist attack using the truck, leading to the rig's explosion. The team investigates the suspicious Jack Damon. Severide and Kidd share a tender reunion.
Season 12, Episode 12: Under Pressure - Severide and Violet clash with Paramedic Chief Robinson after Lennox makes a dangerous call. Cruz collapses from smoke inhalation at a fire, leading to marital issues with Chloe. Capp and Tony attempt to break a world record. Lennox is fired. The episode concludes with Lennox warning Severide about Robinson's ambition for a Deputy Commissioner position.
Season 12, Episode 13: Never Say Goodbye - Boden's decision impacts his Deputy Commissioner race. A tense call triggers Carver and Damon, while Mouch struggles with the new truck. Boden is promoted to Deputy Commissioner. Damon reveals that Benny Severide was his father. The episode concludes with Boden's emotional farewell from Firehouse 51.