After witnessing a drive-by shooting and hitting her head, Dr. Manning struggles with the aftermath of a head injury. Complicating matters, she and Dr. Halstead deal with a teenage patient and her overbearing older husband, who might not be looking out for his young wife's best interests. Dr. Rhodes finds himself in a unique situation when he learns alarming information about the woman he went on a date with. Maggie is surprised to discover some unexpected things about the man she has been seeing. Dr. Charles is frustrated when Dr. Reese disobeys his orders and puts herself at risk.