Guy Burnet

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.

Kidd is forced to deal with the unpredictable actions of her ex, while Chief Boden struggles with Jimmy, and Dawson faces a decision on her foster care with Louie.

Casey's run for alderman is put in jeopardy when his opponent launches a propaganda attack against him. Meanwhile, Mouch has a bachelor party.

A building collapses and leaves dozens of people trapped and injured, and Chief Boden faces a life-or-death decision in the rescue plan. Dawson continues her quest to foster Louie, while tensions flare between Casey and Antonio.

Severide and Cruz discover a child's remains in a chimney, and Severide links it back to a case he previously worked on. Also, Firehouse 51 try to help Casey win as the vote for alderman edges closer.

Casey and Dawson get caught in what may be a political mess; Stella has a big decision to make about her boyfriend; members of the squad are in a dangerous situation after responding to a car accident.