While planning his birthday fiesta, J.D. finds a list of things he wanted to accomplish before he turned 30. When he discovers he has accomplished none of them, he enters a triathlon. Meanwhile, Elliot, in an effort to break her boyfriend out of his shell, discovers a side of him that freaks her out. Back at Sacred Heart, in an attempt to be promoted, Turk is working hard to impress his bosses and takes on a patient who wants to be hypnotized during surgery rather than using anesthesia.