J.D. tries to get together with Elliot's sorority sister Melody, but she just wants to make out with him without going further. Meanwhile, Keith re-proposes to Elliot after she gets to make everything perfect, while everyone has fantasies about being married to Elliot. Elliot and Carla are having problems figuring out what is wrong with two elderly patients, who show the same symptoms but have no obvious connection.

Kim moves in with J.D. in order to raise their child together. J.D. learns from Turk and Dr. Cox that fatherhood changes the way of how to see things. Carla complains to Elliot about her being a control freak when they prepare the bachelorette party.