Stakes are high when a massive car pile-up on the freeway impacts someone dear to the firehouse family. Brett and Foster encounter a harrowing call while Kidd and Severide find their relationship being tested.

Annie Hogan, Anthony Ferraris, Ariane Rinhart, Colin Egglesfield, Daniel Kyri, Daniel Patrick Sullivan, Darren Hill, Ezekiel Ruiz, Ilyssa Fradin, Jim Fierro, Kate Villanova, Kelsey Phillips, Kristen Gutoskie, Kyle Hillman, Mark Denny, Michael Aaron Pogue, Mike Hanley, Molly McQueen, Randy Flagler, Ruby Dalton, Suellen Burton, Teddy Sears, Tye White