Robyn Coffin

Casey and Naomi fight to escape a raging fire in Casey's apartment. Meanwhile, Brett and the team struggle to create an engaging community fire safety presentation, and Severide and Kidd's relationship reaches a crossroads.

Tensions run high between Casey and Herrmann when the firehouse responds to an apartment complex fire. After discovering something extremely suspicious during the call, Kidd and Severide do some investigating and get CPD on the case.

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 and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.

Firehouse 51 responds to a dangerous structure fire that leaves one of their own in jeopardy. Borelli confronts Boden about his brother's death.

When the squad is summoned to the scene of an accident, Chief Boden makes a split-second decision that overrides a fellow Chief.