The team responds to a crisis at a community center. Severide is forced to investigate one of his own Squad members. Kidd helps a teacher going through a post-incident spin-out.

Herrmann investigates the rise in missing fire hydrants and teams up with Kylie to track them down. Kidd's cousin comes to town, revealing surprising family history. Violet and Novak treat the victim of a birthday cake smash gone awry.