While working to track down a bombing suspect, Voight and Antonio meet with Chief Boden, who unwillingly agrees to let Dawson and Brett go undercover. As the investigation continues, Boden, Casey and Severide lend their skilled expertise in the investigation. Elsewhere, Kidd and Zach's relationship hits a bump and Cruz has a hard time expressing his true feelings for Brett. Meanwhile, Herrmann and Connie are forced to come up with an alternative solution when two birthday parties are booked on the same day at the firehouse.
Chicago Fire, produced by Dick Wolf, stars Taylor Kinney, Monica Raymund and Charlie Barnett, in an action-driven drama exploring the complex and heroic men and women of the Chicago Fire Department.
The firehouse reacts to some exciting news, a mysterious stranger arrives and a shocking call takes Severide's breath away.
Severide and Casey try to find the best fit for Kidd. Ritter, Gallo and Violet help plan an event for Mouch.
A fire breaks out at a pet food factory and Casey and Severide help the owner, Pete, get to the bottom of it. The annual garage sale takes place at 51 and everyone is on edge.
A mysterious caller who is in danger relies on Kidd to help save her and her brother. The firehouse helps Cruz get ready for fatherhood.
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.