S7, E1: Greene and Corday contract poison ivy after a romantic outing together. Dr. Chen keeps her pregnancy a secret. Carter finishes a drug rehabilitation program. Romano appoints Benton as a new surgical attending physician. Because Abby's husband failed to pay her medical school tuition, she gets temporarily deleted from the program. Members of two rival high school football teams and some of their fans cause a disturbance in the ER while a player gets treated.