Firehouse 51 is forced to share space with Firehouse 17. Kidd and Herrmann fight over Ritter. An arson case tests Kidd and Severide’s relationship. Firehouse 51 says goodbye to one…

Mouch sets out to change his legacy and nickname. Ritter pushes Herrmann to see a doctor. Brett searches for the perfect wedding venue.

After witnessing a domestic dispute, Brett and Violet decide to take the investigation into their own hands. Mouch vets Truck 81’s new firefighter. Herrmann relies on something new to aid…

Julia spends a couple of days at 51. Boden’s stepson returns, desperate for Boden to help his mother. After a little girl starts a fire in her backyard, Kidd and…

After their defibrillator malfunctions on a call, Brett and Violet search for answers. Herrmann tries to find the perfect home for his new recliner. A secret from Gibson’s past comes…

Firehouse 51 welcomes back some familiar faces and says goodbye to Brett. Violet scrambles to decorate Brett’s wedding venue. A call at the expo center takes a shocking turn.

Violet clashes with her new partner. Severide discovers a hidden stash of money on a call and squares off against the cops working the case. Mouch gets a parking ticket.

While on a mission to save lost hikers, Team Scorpion’s helicopter crashes, igniting a massive wildfire that quickly closes in on them. Also, Sylvester must help their injured pilot who…