KPXD-DT Gallo, Violet and Ritter debut their microbrewery business at Winterfest; Brett prepares to present her paramedicine program to an oversight panel; Firehouse 51 gets in the holiday spirit. 2026-08-31 Stella Kidd returns to Firehouse 51; the team must work together to put out a potassium fire in a tunnel; after that incident, Ritter begins to worry about a young cop who witnessed the fiery death of a truck driver. 2026-08-31 On a call with Station 37, a firefighter is struck by a power line and decides to lash out after her injury; Brett is visited by Scott and Amelia; Violet gets a surprise envelope; the rest of 51 enters a contest. 2026-08-31 Boden, Kidd and Severide work together to protect one of their own; at the Fire Academy, Herrmann meets an inspiring young man; talk of the annual CFD Gala dominates the firehouse. 2026-08-31 After a botched carjacking turns out to be something much bigger, Voight's unit goes toe-to-toe with a smart drug kingpin who only works with women; new recruit Vanessa Rojas struggles with the transition from undercover to intelligence. 2026-08-31 After zeroing in on a suspect responsible for bioterrorism, the P.D. prepares to undertake its biggest manhunt yet; Upton is torn between helping track down the perp and providing emotional support to a scared young girl who needs her. 2026-09-01