Tonray Ho

Two Families. Thanksgiving proves to be a busy holiday for the firehouse.

Win Loss. Drs. Manning and Rhodes suspect that two separate cases involving sick babies may be connected, a homeless patient's upbeat disposition enlightens Drs. Halstead and Charles, Dr. Choi and a Navy corpsman deal with the toll of gang violence.

Disorder. Doctors Rhodes and Downey are at odds over a patient's emergency heart surgery, Dr. Choi and a paramedic respond to a call from an injured hoarder, a woman is bitten by her own dog.

Hearts. Dr. Choi is tested when an erratic patient takes drastic measures, Dr. Manning questions the circumstances behind a young boy's broken wrist.

Lt. Casey is unable to rescue a woman who becomes trapped inside her burning greystone, prompting him and Lt. Severide to butt heads over the husband's role in the tragedy. Herrmann is on a mission to catch a mystery tagger that keeps targeting their firehouse and Boden gets a surprise visitor.

A dangerous warehouse fire puts truck and squad at risk. Tensions are high for Dawson and Casey when Dawson's father overstays his welcome at their home. Meanwhile, Casey continues to fight for his first responders bill, Mouch makes a serious decision regarding his future.