Sergeant Baker arrives at the camp with his Moose. Hawkeye decides to find a way of getting her away from Baker. He tries ordering him to release her, tries buying her, and then resorts to cheating at cards. He releases her but she won't go, so he tries to teach her how to be independent.

The 4077th is designated as the setting for the making of an army film on Mobile Army Surgical Hospital units. Hawkeye is chosen as the star while Margaret and Frank compose a screenplay. The Eye Of The Hawk objects to the piece of propaganda that filmmaker Lt. Bricker is producing and, having exposed the original film, reshoots a new one his way, starring himself as Groucho Marx-ish Yankee Doodle Doctor, and poking fun at glorifying doctors while concluding with a rather serious speech about the hell of war.

Henry receives a citation for the camp achieving the best efficiency rating, and then General Hammond reassigns him to Tokyo. Frank then changes the camp to be more military, and he confiscates Hawkeye's and Trapper's still. They use forged passes to go to Tokyo to convince Henry to come back and end up pretending Radar is sick.

Radar gets a Dear John recording from home. Hawkeye and Trapper try to set him up with a date, but fail. Radar is taken by a new nurse at the camp and she is into poetry and music, so they coach him. Margaret wants to stop the relationship, so Hawkeye and Trapper get between her and Frank until she relents. Radar's "Ahhhh, Bach!" and "That's highly significant," quotes win him the girl.

General Clayton calls to say that a ceasefire is to be declared. The camp celebrates, Klinger gives away his dresses and locals start to take pieces of the camp. But Trapper does not believe it. Hawkeye claims he is married to avoid promises he made to several nurses. The party to celebrate the cease-fire, which never really took place, is interrupted by incoming wounded.

An inept North Korean pilot, known as "5 O'Clock Charlie", makes his daily attempt to bomb the ammo dump. Frank puts in a request for an anti-aircraft gun, which is granted when Charlie hits General Clayton's jeep. Frank takes charge of the gun, while Hawkeye and Trapper are determined to prevent him using it, by getting rid of the ammo dump. Frank misses Charlie and destroys the dump.

Radar writes the weekly activity report. Hawkeye operates on a wounded prisoner who grabs a scalpel and attacks the doctors. Frank wants Klinger thrown out on a section 8,so Henry calls in a psychiatrist, Major Freedman. Hawkeye is attracted to a new nurse but thinks she is married. Trapper loses a patient who developed complications during the O.R. fracas with the wounded soldier.

Hawkeye operates on a 5-year old Korean boy, and Radar can't find his family. Henry plans to send him to the orphanage, and the camp enjoys his company while they can. Trapper decides to adopt him after consulting his wife, and has to rescue him after he wanders into the minefield. Kim's mother turns up at the orphanage looking for him.

Once more Hawkeye writes home to his father: the doctors operate on a soldier with a grenade shot into his body; Hawkeye and Trapper colour the skin of a racist patient, who demanded the right colour blood, while he is asleep; Henry gets a movie of his daughters birthday from home; the officers hold the monthly staff meeting.

The camp succumbs to the Asian flu, except for Hawkeye and Margaret, who have to do everything themselves. As the others start to recover, Hawkeye falls ill but he still manages to operate when wounded arrive. Finally the others are well enough for Hawkeye to stop working and rest. He is thanked for his service with a commemorative roll of toilet paper.

Hawkeye and Trapper recover from an all night party. Henry gets a barbecue, and Hawkeye puts in a request for an incubator. The Quartermaster turns him down. They locate a Major with 3 incubators, but he won't let them have one. A Colonel tries to sell them one, and then they get into trouble with a General at a press conference. Finally, Radar trades the barbecue for an incubator.

The 4077th and friends convene for their weekly “Medical Conference,” A.K.A. Poker while Radar runs over a civilian and Frank is held hostage in the showers by an enlisted man.

Henry returns from a week in Tokyo, to announce that he is in love with a 20-year old girl called Nancy Sue Parker. She arrives for the weekend, and Henry shows her off. Nancy comes on to Hawkeye while Henry is in surgery. Henry is reminded of his wife back home when Radar places a call for him, and he realises it's his wife he loves.

A Korean family set up camp in the middle of the compound. A Korean woman with a baby comes looking for the father, and names Radar. Civilian affairs relocates the family and blood tests prove Radar is not the father.

While there are no casualties, Hawkeye & Trapper crate up Frank while he sleeps and receive gorilla suits through the mail. Henry gets a tan and gives another sex orientation lecture. When the wounded start pouring in again, their own side shells the camp, hitting the generator, and Radar tries to get through to someone to stop the shelling.

The supply lines to the camp are cut. Radar, the housing officer, starts doubling people up to save fuel and Klinger is thrown out of the nurse's tent. People start burning everything to stay warm while Frank wears his heated socks. The toilet paper supply is worst hit, and then wounded start arriving. Supplies are eventually restored.

The arrival of a new batch of mail leaves Trapper depressed, and thinking of desertion, despite Hawkeye's efforts to dissuade him. Meanwhile, Hawkeye learns that he has successfully tricked Frank into buying stocks in a fictitious company, Pioneer Aviation.

Frank is investigated by two crazy intelligence men, one who's convinced he's a communist, the other's certain Frank's a fascist.

As Hawkeye and Trapper are planning to leave for Tokyo, an unusual offer to swap POW patients between the Chinese and the 4077th comes in. Henry, after much debate, agrees to send Hawkeye, Trapper, Frank, Radar, and Klinger into enemy territory. Frank almost botches the swap when he brings a squirt gun to the exchange. Fortunately, the Chinese Dr. Lin Tam has a sense of humor; he went to the University of Illinois, after all.

While Henry is away in Seoul, Burns and Houlihan are in charge, and Hawkeye is the officer of the day. His refusal to release a wounded Korean soldier, wanted by US Intelligence, leads to a confrontation with Colonel Flagg.

The OR is filled with more wounded than the unit can handle. Hawkeye does heart massage on a soldier, which saves his life, but he dies four hours later. Sidney Freedman drops in during the deluge, and is dragged into the fray by Hawkeye.

Trapper gets an ulcer and a ticket home. Unfortunately, his going-away party is spoiled by a new Army regulation, which forces him to stay.

Sick and tired of having liver and fish for an 11-day stretch, Hawkeye, driven near to insanity, starts a riot in the mess tent. He and Trapper then orders spare ribs and sauce from the best place he ever had them, in Chicago. Trapper calls a woman he spent a weekend with to pick up the ribs, and then they get choppered in. Unfortunately, right as they're sitting down to eat, wounded arrive, and Hawkeye is forced to postpone sinking his teeth into his beloved ribs.

The camp prepares for a visit from General MacArthur. Klinger dresses as the Statue of Liberty as the General's jeep drives through the camp. MacArthur is so impressed, he salutes!

Charles plans a scheme to get rich when he discovers that blue scrip is going to be exchanged for red. Hawkeye and B.J. outsmart him, and he is left holding the worthless scrip. Klinger tries to get into West Point so that he can get out of Korea.

When bad reports are filed at headquarters, Col. Potter contemplates retirement.