Mark is befuddled by an invitation from Susan to go on a joint vacation to Hawaii. The ER is filled with more refugees from Southside, Drs. Maggie Doyle and Abby Keaton among them. Benton decides to join Keaton's pediatric surgery team. Carter gets on Anspaugh's bad side when he exaggerates a patient's condition to book an operating room. Jeanie tries to keep her HIV status a secret in the face of Weaver's queries. Jerry tries to trap a loose kangaroo. Mark spends his entire day working on one patient, against Anspaugh's decree that ER attendings and residents should handle 2.5 patients per hour. Carter's apartment building burns down.