David Von Kampen

After responding to a fire at a property belonging to a drug cartel, Casey suspects Cordova when money is found missing from scene.

Cruz leads the charge in getting the firehouse to gear up for the Polar Plunge, and Herrmann has a hard time bouncing back after dealing with a tough call. Plus, Foster's personal relationships begin to interfere with her job.

Severide is shocked when Rene Royce resurfaces at the firehouse and Casey comes up with a plan to help Chief Boden in his latest pursuit.

Dawson and Brett are assigned a new trainee for a shift, but the newbie lands them in hot water during a harrowing call out.

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.

Kidd, Seager and Carver investigate a fire at the city stables. Kylie clashes with some of the firefighters over changes due to budget cuts. Herrmann struggles to keep it together as Cindy's condition worsens.