Dr. Carter is alarmed as he rushes his pregnant girlfriend Makemba into the E.R. when he suspects trouble, while Dr. Corday gets a jolt from the past when the late Dr. Greene's teen daughter Rachel shows up with her boyfriend looking for a haven -- and some "morning-after" pills. Elsewhere, Neela prepares for her graduation by welcoming 20 family members while Abby -- who hasn't passed the boards yet -- prefers to sit it out. Before the ceremonies, Neela and Dr. Pratt seek out an overweight teenager whose blood pressure could indicate deadly heart disease. In addition, Nurse Sam is uneasy about her ex Steve moving back in her apartment while Frank loudly returns after his cardiac attack.