When an expectant Jordan shows up unexpectedly, Cox is forced to choose between her and his new love, Julie.

Meanwhile, J.D. and Turk take advantage of the hospital's supply closet for sleep, when they take on extra shifts at a free clinic to supplement their income. Carla encourages Elliot to stand up to her father, when he pressures her to pick a specialty more "suitable for a woman."

Elliot meets a nice guy at the bar, but freaks out when she finds out he's a male nurse at Sacred Heart. Turk keeps asking Carla to marry him, but she still won't give an answer. Dr. Cox feels the pressure he puts on himself everyday: His psychiatrist, his subordination to Dr. Kelso and his paternal feelings for J.D.

As J.D.'s relationship with Danni progresses, he and Dr. Cox are forced to spend more time together outside of the hospital, to Perry's great chagrin.

Meanwhile, as they each deal with problems in their own relationships, Carla and Elliot work to find their own balance between their personal and professional relationships.

Dr. Kelso accidentally punctures his eardrums giving the hospital staff an opportunity to tell him how they truly feel about him.

Elliot struggles to find her defining moment after Turk performs his first solo surgery. Dr. Cox deals with the reality of growing older when his back goes out. J.D. finds out that many of the hospital staff don't know the Janitor as he does.

Elliot feels uneasy with the proper terms for sexual organs, especially after performing a pelvic exam; J.D.'s patient refuses to have surgery for prostate cancer.

Dr. Cox is having issues with Jordan, since Ted revealed that they are still technically married due to some filing problems.

J.D. has problems of his own as he can't shake off the tag of Co-Chief Resident the Janitor assigned to him, while Elliot keeps the Chief Resident tag.

Elsewhere, Turk begins to doubt his abilities after letting a patient die and isn't helped, when he finds out J.D. has no confidence in him either.

Dr. Cox and Molly spar about her involvement in his patients.

J.D. is shocked to hear Dr. Cox tell his interns that eventually, they will screw up and kill a patient. J.D. fears his first time killing someone will soon be upon him.

Elliot is upset with Molly, after she disagrees about a patient's promise to attend drug rehab.

Carla loses Rowdy and she and the Janitor go looking for him.

Elliot starts showing J.D. up as the calmer, more competent doctor. A date with the Janitor leads to an a capella sing-off between his "group" and Ted's band.

Turk starts taking his diabetes more serious, when he realizes the dire consequences of the disease.

Turk won't open up at couples therapy.

Elliot refuses Dr. Cox's romantic advice, when a very attractive man saunters into the hospital.

J.D. learns a lesson in humanity from a dying old woman.

The Janitor accidently lets a bunch of rats run around Sacred Heart.

J.D. urges Cox and his fellow doctors to do special, unconventional things for their patients, but J.D. himself is not sure he can shave his head for a woman undergoing chemotherapy, after meeting a woman who loves his hair. Meanwhile,Turk and Carla attempt to eliminate all the stress in their lives, to better their chances of conceiving. Also, Elliot can't stop giving her new boyfriend Keith stupid gifts.

J.D. develops a crush on a new physical therapist but due to his latest misfortunes, he finds it difficult to ask her out. Elliot asks Keith to move in with her, but is not willing to budge on her home rules. Turk breaks his arm and is sent back to residency by Dr. Kelso. Thanks to Dr. Cox, he realizes that he doesn't know as much about medicine as he thought.

J.D. and Elliot's relationship seems to have been rekindled when they encourage Dr. Kelso to find his true happy place.

While their wives are out of town, J.D. and Turk attend a med student's party; Kelso says goodbye to Ted and Gooch.