Frank Burns cracks up over Margaret's marriage while on R&R in Tokyo, and Major Charles Emerson Winchester III is sent to the 4077th as a replacement by a vindictive superior officer.
Radar has always looked up to Hawkeye and admired him as his hero. But after suffering a Jeep accident en route to R&R at Hawkeye's behest, Radar questions his own hero worship - particularly when he and his hero have a falling-out.
Sidney Freedman feels depressed over Tom, a young soldier, who blames Sidney for his injuries because Sidney sent him back into combat. The 4077th members light a bonfire to release their stress.
Hawkeye tries to travel to Seoul in order to visit Nurse Gilmore for the weekend. Charles tapes an angry message to his influential parents back home in Boston, asking for their help in getting him reassigned stateside.
A delivery error keeps the 4077th from receiving a vital shipment of supplies, Winchester has a selfish reaction to an error that nearly kills a patient, and everyone is forced to guess at the murderer's identity in a mystery novel.
Despite Colonel Potter's warning, Hawkeye falls in love with a Korean villager. Meanwhile, Margaret learns that her husband Donald may have made a pass at a new nurse assigned to the 4077th.
Winchester plots to cheat the natives when the Army changes the military scrip while Klinger tries to attempt to apply to West Point in order to drop out later.
Radar wants to get a tattoo, which Hawkeye and B.J. try to discourage. Major Houlihan wants to transfer one of her nurses out because she is too emotional for the job.
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.
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.
B.J. disobeys orders and goes out to find Hawkeye and Margaret, who are still missing in action. Meanwhile, their romantic relationship quickly goes up in flames, and they become even more hostile toward each other.
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.
