
Members of the 4077th Mobile Army Surgical Hospital care for the injured during the Korean War and use humor to escape from the horror and depression of the situation. Among the 4077's people are Capts. Benjamin "Hawkeye" Pierce and "Trapper John" McIntire, Majs. Margaret "Hot Lips" Houlihan and Frank Burns, and Cpl. Walter "Radar" O'Reilly.

When Hawkeye becomes temporary commander of the 4077th, he must contend with an "invasion" of Koreans.

Hawkeye and B.J. are appointed morale officers.

Hawkeye flees to the front with an archenemy to avoid a "surprise" birthday party.

Hawkeye writes to his father detailing Radar's attempts at passing an exam and a sudden cooling of affections between Frank and Margaret.