What Happened on Chicago Fire Season 15: The Ultimate Episode-by-Episode Guide

An episode-by-episode recap of Chicago Fire Season 15. Watch One Chicago Wednesdays on NBC and stream episodes on Peacock.

NBC Insider One Chicago What Happened on Chicago Fire Season 15: The Ultimate Episode-by-Episode Guide

Don't miss a moment of the action by watching Season 15 of Chicago Fire on NBC and Peacock.

By Jessica White Updated Oct 29, 2026, 12:19 PM ETMayday Called After Massive Warehouse Collapse | Chicago FireNow Playing2:26HighlightMayday Called After Massive Warehouse Collapse | Chicago Fire4:38HighlightCops Clash With Violet & Novak During Paramedics Rescue | Chicago Fire1:48HighlightCasey and Severide Risk Their Lives in DEADLY Church Inferno | Chicago Fire | NBC100