J.D. tries to stop acting like a child while Turk tries to bring him back. Dr. Cox has an 11-year-old patient, Josh, with leukemia, and has to deal with the child's parents who want to keep the condition a secret from Josh. On Dr. Kelso's birthday, Elliot throws him a party, and finds out that Dr. Kelso is 65 years old. The hospital's board members find out about it and force him to retire. He asks for it to be kept a secret until they find a replacement.