It's Christmas, and even though J.D. and the others don't really feel like celebrating, Turk makes a huge deal about it. But his faith and happiness are gone after a very busy night at the hospital.

Dr. Cox has J.D. videotape the birth of the child of one of his friends.

J.D., Elliot and Turk are receiving their first medical students, and now they finally get a chance to see what it feels like to be on the other side. Turk's student is a very attractive young woman, to whom Dr. Cox is immediately attracted. But he doesn't know his way around women and needs Turk to give him a little help. J.D. doesn't know how to handle his student and Elliot's turns out to the be son of an important CEO.

J.D. has a patient who's rude to him and the nurses and eventually dies from cancer. J.D. feels awful for not giving him his full attention and worries maybe he could have saved the guy if he was nicer to him.

Meanwhile, Elliot is convinced that Dr. Kelso is the one singing a song called "Tuscaloosa Heart" on a tape given to her by a patient who claims he went to college with Bob. And Dr. Cox finds himself trapped in a love square: He's falling in love with Kristen Murphy, his intern, just as his ex-wife reappears demanding sex – and there's also his crush on Carla.

Ever since her father cut her off financially, Elliot's been feeling the weight of the world on her back. While having to find a new affordable place to live, she also has to face the threat of being sued by a patient whom she told he had only eight months to live. Carla and Jordan hit a sore spot when Carla gives her opinion on Jordan and Perry's relationship.

Meanwhile, J.D. has a fight with Dr. Cox and the two dispute over who gets to give the better treatment to two patients with the same prognosis.

J.D. and Turk think they've got bad karma after hitting a car and causing an accident, while playing golf on the hospital roof. Dr. Cox bends over backwards to give Jordan as much comfort as possible on her labor day, and she confesses to J.D. that Dr. Cox is the real father. Elliot seeks advice from Carla on how to tell Paul that she's crazy, because they're getting more intimate and she can't hide it anymore. But Carla is feeling too crazy herself with the upcoming wedding.

A chance meeting in the elevator sparks a new friendship between J.D. and the mysterious Danni whose ongoing dialogue about her ex forces J.D. to talk about his feelings for Elliot.

Carla's brother Marco comes to visit, but he still hasn't forgiven Turk for mistaking him for a valet at their mother's funeral. Unfortunately, Turk can't even apologize because Marco can't speak anything but Spanish.

At the hospital, Dr. Cox relishes his new job promotion but is surprised when J.D. doesn't follow his lead in contradicting Dr. Kelso's orders.

Elliot asks Sean to move in with her, which only adds to J.D.'s problems.

Turk is unsure why Dr. Miller's attitude towards him has changed, until he finds out that Carla un-invited her from their wedding.

Dr. Kelso outrages Dr. Cox when he announces that Sacred Heart will begin doing full body scans, starting with an ever present hypochondriac patient, who wants any freebies he can get.

With the case against Turk on his mind, J.D. attempts to end it with Neena, but she won't take "no" for an answer and keeps him wrapped around her finger. Carla tries her own way of persuading Mr. Corman to drop the lawsuit.

Elliot sets out to prove she isn't the doctor she was four years ago and doesn't need to rely on anyone anymore.

When J.D. meets a former writer from his all time favorite TV show "Cheers," he begins to picture his life at the hospital as a bland, multiple camera sitcom, where everything is perfect and wraps up nicely.

Back in reality, Cox is relunctant to fire an amiable cafeteria worker, while Turk and Carla struggle to keep their promise of constant romantic affection afloat.

J.D., Turk, Elliot and Carla are interrogated about the mysterious death of a patient.

Dr. Kelso learns, that J.D. and Turk were away tracking down a patient, Elliot was traumatized over finding out that her make-out buddy was married and Carla was busy recruiting hospital personnel for a group lottery purchase.

When J.D. rearranges his schedule to allow himself more time to spend with Turk, Turk secretly resents hanging out with J.D. in that time because it interferes with his own "Turk Time."

Meanwhile, Dr. Cox and Jordan go on a double date with Elliot and Keith, and Carla covers for Kelso at work, as he grieves for his dead dog.

Later, a patient almost dies, after giving up part of his liver for his brother, and the hospital staff learns about making sacrifices for the people they really care about.

A new patient at the hospital wakes up and sees everything happening around her as a musical.

Carla can't decide whether or not to return to work and Elliot must find a way to tell J.D. he can't move into her new house with her.

A memory loss patient is the peg for a look back on the last seasons of Scrubs, when the Sacred Heart crew looks back at their memorable moments.

J.D's brother Dan returns and delivers a few home truths to his little brother. In the meantime, Elliot and Dr. Cox debate over the morals of their practice and the staff of Sacred Heart find the Janitor's behavior rather odd after he watches "An Inconvenient Truth".

It's Ted's lucky day when he falls head over heels in love with an ukulele player, and Dr. Cox realizes he cannot handle everything that is thrown at him.

J.D. manages to still bother Dr. Cox despite being away on a vacation from the hospital. Meanwhile, Turk and Carla have some big news to announce.