Eliza Shin

Jake and Rosa must deal with a mother in mourning as they work and rework a crime scene in order to solve a difficult murder case with confusing evidence.

Jonah (Ben Feldman) and Amy (America Ferrera) take Glenn’s (Mark McKinney) tickets to a managers’ conference in Chicago so they can enjoy a free night on the town, but their plan hits a few bumps. At the store, Cheyenne (Nichole Bloom) helps Mateo (Nico Santos) damage control after his undocumented status is leaked, and Dina (Lauren Ash) and Garrett (Colton Dunn) struggle at gift-wrapping.

When Grover gets into a fight with a bully at school, Gemma is torn between her role as principal and wanting to protect her son. Also, Calvin encourages Marty to stand up to his own bully, only to be shocked when he learns who it is.

When the drunk driver who hits a car and paralyzes a 16-year-old boy turns out to be the son of a dirty cop, Lieutenant Casey must decide whether or not to turn him in. Facing pressure and subsequent threats from the powerful and well-connected Detective Voight, Casey decides to tell the truth, inviting a stand-off. Additionally, Severide, who's fighting off the advances of the Chief’s new assistant, learns he has a fractured vertebra in his neck that may never heal if he doesn't get treated, but ignores the doctor's advice so he can continue working. Meanwhile, Mills is torn between helping his mother at her restaurant and devoting himself full-time to the fire department, like his father did.

Severide finally addresses Chief Boden about his injury and makes some important personal decisions about his future. Meanwhile, Casey struggles with family matters and Dawson takes matters into her own hands when she discovers a young girl who is the sole survivor at the scene of a rescue call.