A husband has an unusual request after the death of his wife; Dr. Charles tries to deal with a patient who wants to cut off his own arm; Dr. Rhodes is concerned about possible complications for a boy who swallowed magnets.
A 9/11 hero with pulmonary fibrosis needs a new set of lungs; Sarah considers hospitals for her residency match while April and Maggie want to remain at Chicago Med; a teenage hockey player with an overbearing father is injured.
Dr. Rhodes cares for Dr. Downey while Goodwin deals with personal issues; April gets hit while tending to a disorderly patient; Dr. Manning's past starts to catch up with her.
Lt. Severide is targeted by an arsonist; Battalion Chief Boden clashes with Gail McLeod; the anniversary of Andy's death; Shay has suspicions; Mari visits Mouch.
An Indonesian man who doesn't speak English arrives at the hospital with a mysterious illness; Dr. Halstead attends Maggie's family reunion; Dr. Rhodes accepts a complicated heart surgery without consulting Dr. Latham.