Dr. Manning and Dr. Charles treat a teenage girl with a rapidly changing set of symptoms that has everyone perplexed. Dr. Choi and medical student Jeff Clark encounter a 19 year-old tough guy who is brought into the hospital in severe distress. Once they establish the cause of the pain, the situation quickly turns dangerous and a resolved Dr. Reese does her best to help. Elsewhere, Dr. Latham makes a big admission to Dr. Rhodes while Dr. Halstead must deal with a difficult case that is further complicated by Dr. Stohl, who has a camera crew following him around to shoot a promotional video spotlighting the hospital.