Klinger breaks in another psycho; the last box of morphine from supply seems to be contaminated.

While dealing with a long stretch of surgery duty, Winchester gets addicted to amphetamines; Radar sets up a mouse race competition between the 4077th and a group of cocky Marine patients.

Colonel Potter learns that negative reports on how he runs the camp have reached Icore in Seoul and he makes some life altering choices because of it. Hawkeye and Bj. go on a mission to discover who has been sending the reports.

A 'chest cutter' and a nurse from the 8063rd are sent to the 4077th in return for Hawkeye and Nurse Bigelow.

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.

Margaret starts getting upset because she thinks she may be pregnant. The only rabbit in camp that can be used for a pregnancy test turns out to be Radar's pet rabbit Fluffy.

As the unit becomes overrun with casualties and tempers flare, Radar tries to raise everyone's spirits by playing new records over the intercom.

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.

The junkman helps the doctors make a much needed clamp that will help them to save a soldiers leg. Klinger accidentally throws out Margaret's wedding ring and ends up in a bad bind trying to find it.

Charles playing of his French horn drives Hawkeye and B.J. crazy and in retribution they go on a bath strike which affects the whole camp.

B.J. and Hawkeye are fed up with doing favors for Winchester because they owe him money. So they challenge him to a poker game to win it back.

Hawkey and Hot Lips come under heavy fire in enemy territory and lose their jeep. Hawkeye then receives a leg would and needs Margarets help.

Hawkeye and Margaret are chosen to go to the 8063rd to give a demonstration on medical techniques.

Colonel Bloodworth threatens to press court-martial charges against Hawkeye, who shoved him in the bar. But then he becomes a patient and witnesses Hawkeye's skills. Klinger bonds with a patient from his hometown.

When Col. Potter decides the 4077th personnel are out of shape, he orders them to exercise. To motivate them, he comes up with the idea for a series of competitions like the Olympics, with the prize being a 3-day pass.

Nurse Cooper has problems copping with the stress and blood of the operating room; Radar decides he want's to get a tattoo.

New military money is going to be issued in order to help keep counterfeiting down and when Col. Potter tells the camp to prepare for it, Major Winchester comes up with a scheme to make money on the event. Corporal Klinger gets a invite to possibly be accepted into Westpoint.

Hawkeye falls in love with Kyong Soon, a Korean woman who is caring for her sick mother and orphaned children. But all hope is lost as Kyong takes her possessions and the children to the south after her mother has died.

With supplies low, the 4077th gets a truckload of ice cream churns and salt tablets. But what it needs are light bulbs, and in the dimly lit post-op Charles makes an error for which he draws the ultimate wrath of his two surgeon bunkmates. Meanwhile, B.J. receives a mystery novel that everyone in camp reads in turn. The last page is missing and the solution to the mystery is undiscovered until B.J. calls the author by long distance.

Charles Winchester records a letter to his wealthy father back in Boston begging him to use his influence to get him out of the unit.

When the camps moral hits a low point, Colonel Potter asks a wounded psychiatrist to help counsel some of the team.

Madness strikes as B.J. and his old friend Bardonaro play a series of practical jokes on each other, just as Bardonaro is about to leave Korea. Hawkeye gets the last laugh. He sends Bardonaro off without his traveling papers, and in a jeep with too little gas.

Radar becomes depressed when he thinks that his manhood has not been fulfilled.

Hot Lips returns from her honeymoon to discover that Frank has went awol and is on a course of wild events during his weekend pass. Charles Emerson Winchester joins the team as a temp surgeon after irritating a higher ranked officer. Klinger gets a lawyer that he thinks will be able to get him out of the army.