Carter travels to the Congo to join Luka, and quickly discovers how different things are to what he left behind. When an overdue Luka returns briefly from a remote clinic, we learn he's having a cozy relationship with French-Canadian nurse Gillian. Carter, Gillian and two aids join Luka at the clinic in order to set up an immunization program. They soon find themselves caught between the Mai-Mai and the Congolese army with several patients, among them an injured young girl and her mother. When the group must evacuate the clinic, Luka refuses to leave his patients and remains behind. Carter returns to Chicago, going to a sleeping Abby's bedside.