Boden makes a decision that impacts the race for deputy commissioner. A tense call brings up painful memories for Carver and Damon. Mouch struggles to adjust to the new truck.

A hazmat call at a dialysis center leads to a shocking discovery. Boden clashes with Paramedic Chief Robinson. Carver notices a concerning change in Gibson’s behavior.

Boden, Ritter, Herrmann and Kidd work together to take down a local politician responsible for a chemical fire. After his aunt’s accident, Gallo worries about their future.

A hazmat call at a dialysis center leads to a shocking discovery. Boden clashes with Paramedic Chief Robinson. Carver notices a concerning change in Gibson’s behavior.

Boden makes a decision that impacts the race for deputy commissioner. A tense call brings up painful memories for Carver and Damon. Mouch struggles to adjust to the new truck.

The big wedding day arrives and Firehouse 51 welcomes Casey back to celebrate the joyous occasion. Emma’s plans to replace Violet come to a shocking end.

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 51 deals with the aftermath of the capsized boat rescue. Gallo, Ritter and Violet discuss plans for a side gig.

Severide and Casey try to find the best fit for Kidd. Ritter, Gallo and Violet help plan an event for Mouch.

Severide and Casey try to find the best fit for Kidd. Ritter, Gallo and Violet help plan an event for Mouch.

A series of suspicious fires sends 51 on a search for the cause. Casey continues down a troubling path. Mouch is looking to make his long-awaited dream come true.

While Mouch makes an incredible save, all eyes are on a mystery man who helped save his neighbor. Casey worries about his future at the CFD.

While Mouch makes an incredible save, all eyes are on a mystery man who helped save his neighbor. Casey worries about his future at the CFD.

A series of suspicious fires sends 51 on a search for the cause. Casey continues down a troubling path. Mouch is looking to make his long-awaited dream come true.

Josto makes a bold move, Loy battles his demons and Oraetta silences her critics.

Loy plays with fire, Josto wears his heart on his sleeve, Oraetta makes a surprising discovery and Deafy closes in on Zelmare and Swanee.

Loy forms an uneasy alliance, Odis finds peace, Josto settles the score, Ethelrida takes a risk and Oraetta gets spooked.

Josto gets revenge, Oraetta comes clean and Ebal teaches Loy a lesson about business.

Josto strikes back, Ethelrida does the right thing, Loy finds himself against the ropes and Deafy shakes the tree.

An uneasy peace between two Kansas City crime syndicates is threatened by an untimely death. Meanwhile, the Smutny family is caught between a rock and a hard place.

The Smutnys receive unexpected guests, Josto and Gaetano reunite, Loy challenges the status quo and Oraetta is caught.