: A series of suspicious laundry service fires prompts Casey and Severide to investigate. They discover a combustible chemical was accidentally mixed into a commercial detergent, which had already been distributed to hundreds of Chicago businesses. The team races to find an unaccounted-for delivery truck that is fuming and nearly ready to explode.
: Mouch dreams of joining the CFD "Pipes and Drums" band but struggles with the audition. Despite failing because he cannot read music, he finds a small victory when the band decides to use his "sob story" video as a promotional tool. Cast & Guest Appearances [S9E10] One Crazy Shift
: Jesse Spencer (Matthew Casey), Taylor Kinney (Kelly Severide), Kara Killmer (Sylvie Brett), Christian Stolte (Mouch), and Eamonn Walker (Wallace Boden). : A series of suspicious laundry service fires
In Season 9, Episode 10, " One Crazy Shift " (originally aired March 31, 2021), the crew at Firehouse 51 deals with a chemical fire investigation, leadership tension, and a comedic subplot involving the fire department's band. Plot Summary : Mouch dreams of joining the CFD "Pipes