Guy Burnet

Casey and Dawson find themselves in the middle of a potential political mess, as 51 responds to a dangerous call.

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

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.

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

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.

Firehouse 51 responds to a building collapse where over a dozen victims are trapped inside the rubble. Meanwhile, Dawson continues with her battle to become a foster parent to Louie.