J.D. begins a new relationship with Carla. J.D. gains a new nickname - "Scooter" - and his relationship with Nurse Espinosa evolves as he begins to out-distance her medical knowledge, while Turk trembles, when he learns that his secret lunch spot was claimed years ago by the territorial Dr. Kelso. Elsewhere, Dr. Cox gives Elliot the evil eye when she won't discharge a troublesome patient.