On this week's 200th episode: Stories intertwine as we follow the day shift of Carter, and Pratt's last night shift at the same time. Carter gets the brunt of the patients from a raging gang war and a mass suicide that leaves the whole hospital stretched to the breaking point. Pratt deals with the trail end of the gang war patients as well as an unsettling stabbing victim, and a firefighter caught in an explosion as Doc Magoo's burns to the ground. Also, Lizzy tries her best to be there for Romano both before and during his amputation surgery.