Finding difficulties training his interns, J.D. asks to Elliot for some help. She tells J.D. about Sean, who gave Elliot great tips based on his dolphin training that fit perfectly for her interns.

Dr. Cox finds the ideal pediatrician for his son: Dr. Norris, who acts and looks just like him. However, Dr. Cox is quick to find a problem with him once Jack develops a cough that scares both him and Jordan.

J.D. believes he may have finally found a mentor in Dr. Kevin Casey, a surgeon with obsessive-compulsive disorder, and it turns out that Dr. Cox has always been jealous of the guy.

Meanwhile, the Janitor and his new assistant help Kelso out with a garbage problem.

Jordan's brother and sister return, but Dr. Cox learns that his brother-in-law Ben hasn't visited a doctor about his cancer in the two years he has been gone traveling the world.

An ever present butterfly prompts the question on what could have happened different as Turk looks for his lucky do-rag for surgery, and Elliot tries to find a lost stuffed animal for a child needing a bone marrow transplant.

Turk has to confront a young patient of his, when he accidentally cuts a nerve and the boy (who happens to be a concert pianist) loses use of one of his hands.

Meanwhile, one of Elliot's patients unintentionally teaches her a lesson about her relationship with J.D.

Dr. Clock tries to reconcile J.D. and Eliot, while waiting to see which one Dr. Cox will give the Chief Resident position to. Molly and Carla are experiencing some subtle conflict and Elliot and J.D. begin to come together after long bouts of conflict of their own.

Meanwhile, Dr. Cox, Turk and the Janitor are forced to work together to help a patient.

When J.D. has to address a bunch of pre-med students about what it's like to be a doctor, he strays off the beaten path and chooses to discuss his best moments as a doctor instead. When he challenges the rest of the staff to do so, they all remember their best memories in the medical field.

Meanwhile, Elliot is forced to face her fear of children, when she must befriend a ten year old boy, whose father is being treated in the I.C.U.

J.D. tries to impress Kylie by paying a hobo in the hospital to fake a heart attack, when everything becomes boring due to a quarantine that he caused.

Turk learns, that Carla dated Cox and gets mad at her for not telling him.

The Janitor makes a bet with Dr. Kelso, who is starving, that will make him pay $700, unless the Janitor is able to get a "face cake," in order to satisfy him, from Laverne.

Also, Danni Sullivan returns to annoy everyone, causing a constant fight between Ted and Doug.

J.D. wants to show Dr. Cox and Dr. Kelso how to treat interns, but instead he finds out that they laugh at his bad jokes out of fear and respect.

Everyone at the hospital is avoiding Jordan to get rid of her except for Turk. An aborted attempt to bond with her results in Jordan being conned by Sam, the drug addict. Elsewhere, Elliot's fellowship goes sour and she finds herself confiding in loose-lipped Carla.

J.D. is annoyed, that Julie doesn't laugh, so Elliot encourages him, to tell her his feelings, and Turk tries to use psychology to fix the issue.

Meanwhile, Carla is upset, when the Janitor refers to a new nurse as a "hot young Carla," which intensifies her growing concern, that she is too old to conceive.

Dr. Kelso is outraged, when he discovers, that a bird has been living in Sacred Heart. He orders the Janitor to dispose of it immediately. However, the Janitor likes the bird so much, he secretly keeps it as a pet. Meanwhile, J.D., annoyed with Keith, tries to get his intern fired, but things don't turn out as intended.

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.

J.D. asks Dr. Cox out for lunch, but runs into annoying former patient Jill Tracy, who unexpectedly teaches him something about responsibility.

Elliot and Carla discover that Todd has been lying about all his hospital "conquests" and suspect that he's been less than truthful about other issues. Turk warns them not to meddle in his affairs.

The hospital is seen through the eyes of Dr. Kelso, who befriends an Iraq War veteran.

The soldier's stay sparks a political debate among staff members.

After being convinced to go to Tacoma for Kim's first ultrasound, J.D., along with Carla, Elliot, Janitor, Keith and Ted, takes Kelso's new RV on a road trip. Meanwhile, Jordan and Dr. Cox have trouble when Jordan's ultrasound reveals that the baby will need surgery.

When Private Dancer is released from the hospital, the military informs him that his injuries are too severe to be reinstated into the service, so he gets depressed. The Sacred Heart staff try to cheer him up, while the Janitor is having a fish problem.

In the wake of Laverne's funeral, the Sacred Heart Staff decide to implement lessons from her life to their actions. Carla is upset that everyone seems to act as if nothing has changed. Dr. Cox tries to take twenty minutes for himself every day, but has great difficulty doing that. Meanwhile, the Janitor helps J.D. and Turk treat a deaf patient. And Elliot learns that Keith wants more from their relationship.

When Keith leaves town for a few days, J.D. expects that he'll finally be able to spend some quality time with Elliot. But he doesn't anticipate Elliot's old college friend dropping by. J.D. switches between hitting on her and competing with her for Elliot's attention. Meanwhile, Turk and Dr. Cox volley a hypochondriac patient back and forth since there's nothing wrong with him.

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.

Dr. Kelso and Dr. Cox have to work together again to get rid of Dr. Maddox, while Carla faces an incompetent intern.

As his increasing workload from being Chief of Medicine begins to take a toll, the unimaginable happens when Dr. Cox reaches out to Dr. Kelso for friendship.