J.D.'s patient, Harrison Marks (John Bennett Perry), needs a new kidney. He doesn't have any family around who could donate a kidney, but he does apparently have an estranged son. J.D. is determined to find this son, since it could be Marks's only hope for the future. J.D. manages to find out that the son, Murray Marks (Matthew Perry), is an air traffic controller at a private airport nearby.

When the big moment of Murray seeing his dad for the first time happens, it goes completely opposite of what J.D. expected. Murray tells his dad that he can have his kidney...for $70,000.

Murray later reveals that his dad has always done something to humiliate him, starting with naming him Murray. J.D. finally convinces him to do it.

But when the lab tests come back, they tell two different things...that Murray is a tissue match for Harrison, but Harrison is not Murray's father. As expected, Murray backs out of giving up his kidney. J.D. tries to reason with Murray. Dr. Cox, even though he warned J.D. about getting involved in patients' private lives, manages to talk to Harrison. Harrison says that Murray's mom was already pregnant when he met her and his dad skipped out, so they figured they just wouldn't tell him what really happened. Murray returns and tells his dad that he can have his kidney.

Meanwhile, Elliot gets coached from Jordan and Carla on how to use her feminine wiles to get more things at the hospital. Her flirting comes back to haunt her when she cuts in line and flashes some cleavage to get an orange soda. The person she cut in front of just happened to be the person interviewing her for a fellowship position. Carla hatches up an elaborate scheme to throw the interviewer off Elliot's track, but in the end, it's the janitor who makes him reconsider. All he did was to ask him if he wanted an orange soda, like the one he was denied while standing in line, and he threatened him with telling his wife that he is having an affair. It turns out the Janitor can imitate his voice extremely well.