Hawkeye, Houlihan, and Klinger go to an aid station at the front. Working closely together under heavy fire and unsanitary medical conditions, the three return to camp with new found respect for one another.

Its quid pro quo at the 4077th: two bottles of Scotch for secret surgery, and a tank to scare off snipers for an unauthorized shot of penicillin.

A sudden deluge of wounded at the 4077th is followed by a fire and a rainstorm which makes matters difficult for the staff.

Hawkeye and Potter provide assistance at a Korean clinic, and run into an enemy attack on the way home. Meanwhile, Klinger begins posing as a Gypsy to help get his discharge papers.

The 4077th hosts a traditional Korean wedding, much to Frank's objections. And Colonel Potter runs into an old friend who has put his troops in jeopardy so that he could receive a promotion.

After Charles hands B.J. two hundred dollars, he begins to take advantage. Everyone gets together and persuades Charles to play poker. He has incredible beginner's luck until Radar discovers that Charles whistles loudly when he bluffs. They all win back their money and then some.

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

A lecture on the latest techniques by a young surgeon from Tokyo, and a later demonstration of his surgical skill, turns Winchester into a drunk and Potter into an invalid, whilst bringing home to Hawkeye and B.J. that they are out of touch with new medical practices.

The 4077th evacuation to a nearby cave to, avoid U.S. artillery fire on a Chinese target, poses problems for Hawkeye, who has a claustrophobia problem that Colonel Potter is unaware of. On the other hand, Margaret hates loud noises. And then there's the problem of a seriously wounded soldier...

Klinger discovers that his duties as company clerk include catering to the eccentric whims of the 4077th officers. Consequently, the unusual demands by Klinger's superiors leave little time to write a letter home to Toledo. Meanwhile, the Doctors are concerned about a young soldier who appears to be mentally deficient.