Turk and Carla ask J.D. to move out to give them some space to rekindle the romance in their relationship. Suddenly homeless, J.D. tries to use the situation to his advantage by asking his girlfriend Kylie if he can stay at her place. Meanwhile, Dr. Cox gets a visit from his high school friend Ron. Dr. Cox and Ron's relationship has always been highly competitive, and just when Dr. Cox thinks he has the upper hand, the discovery that Ron's son may be autistic sends them into unfamiliar territory.