Firehouse 51 is called in to battle a dangerous structure fire that places everyone in peril. Severide makes a big personal realization. Casey lends another helping hand to Naomi, the investigative reporter.

Anthony Ferraris, Carlos Olmedo, Casey Tutton, Daniel Kyri, Greg Violand, Kate Villanova, Kevin Ging, Kristen Gutoskie, Melissa Ponzio, Nancy Jane Nelson, Nicole Velasco Lockard, Raffael A. Sears, Randy Flagler, Scott Danielson, Trevor Dawkins