Severide's old friend arrives, hoping for a second chance with the Chicago Fire Department. Meanwhile, Mills tries to regain his active squad status, Mouch confronts his fear about meeting his child, and Brett and Dawson set out to have a big night out.moreless
There's a new chief at 51 while Chief Boden takes leave, and he brings with him a relieving firefighter who none expects they would every work with. The new chief's methods of leadership are quite different than the crews at 51 are used to ...moreless
Leslie Shay's sister visits to get some closure on her Shay's death and the investigation into her arson continues
The firehouse crew rally around each other after their recent loss, but will they come closer together, or will this break them apart? The Chief gets some BIG news.
Jones is struggling with her Dad's choice to transfer her to PR. Dawson & Shay go away for a break but find their skills are needed. The boys help Mouch with his dating skills.moreless
Severide feels compelled to help a man he saved from a car accident. Casey and Boden struggle to deal with the orders from Jones' father. A call to duty affects the firehouse.