Rival gangs bring their war to Med. Halstead and Charles work with a brain cancer patient who's refusing treatment. Tensions run high in the OR when a patient's transplanted uterus fails.

A brutal storm rocks Chicago. Halstead encourages Dr. Grace Song to go against her own findings for the benefit of their patient. Asher rushes to the hospital to help Archer's pregnant patient. Maggie's concern for Ben consumes her.