Hawkeye and B.J. refuse to shower until Charles stops playing his French horn, and Colonel Potter deals with a patient who wants to kill himself because he is now disfigured.
Hawkeye is fed up with having to work with inadequate surgical equipment, so he tries to find somebody to create a makeshift clamp for him. And Klinger tries to find Margaret's wedding ring after it was accidentally thrown out with the trash.
Father Mulcahy and Klinger retrieve some stolen penicillin after a soldier's confession, B.J. deals with a patient's morphine addiction, and British Major Ross demands that Hawkeye release his still-injured soldiers.
Klinger's wife wants a divorce, Radar's upset because his mom is seeing a new man, B.J. finds out that another man made a pass at his wife, and Hawkeye receives another love letter for another soldier named Benjamin Pierce.
While dealing with a long stretch of surgery duty, Winchester gets addicted to amphetamines. And Radar sets up a mouse race competition between the 4077th and a group of cocky Marine patients.
When Pierce is temporarily put in charge of the 4077th, the weight of the responsibility takes its toll. He changes, becoming up-tight and authoritarian.
When the Army increases the number of points needed for a discharge, Hawkeye gets angry and interrupts official peace talks. Meanwhile, Margaret decides to divorce Donald after he permanently transfers himself stateside.
Radar gets bent out of shape when he thinks Colonel Potter is spending too much time with a visiting female colonel, and Hawkeye tries to figure out what BJ's initials stand for.
Major Winchester lets his surgical prowess go to his head when a "Stars and Stripes" journalist comes to interview him. But the journalist is more interested in making moves on Margaret than getting the story.
The 4077th is forced to use extreme measures to save a group of soldiers suffering from hypothermia, while Klinger suffers temporary deafness after a mine explosion on his watch.
A North Korean Spy infiltrates the 4077 and poses as Charles' houseboy, to observe and report on 4077th's efficiency and success to his superiors. The staff is baffled by a skin-rash epidemic.
Winchester encourages Hawkeye, B.J. and Margaret to raise the stakes in their practical joke battle, and Father Mulcahy is desperate to receive a promotion.