The Chicago Fire pilot, which aired on October 10, 2012, launches the One Chicago franchise by focusing on Firehouse 51's internal conflicts, specifically the feud between Lt. Casey and Lt. Severide following the death of firefighter Andy Darden. The episode introduces key characters, including paramedic Dawson and candidate Mills, while establishing the high-stakes, dramatic tone of the series. Stream the pilot on Peacock . Pilot | Chicago Fire Wiki | Fandom