A freezing night, an artillery barrage that's coming too close, a patient going downhill, and Frank's searching Hot Lips' tent for his letters.

Margaret takes off in the middle of the night to help deliver a Korean baby. Nobody knows of her whereabouts, and Colonel Flagg is brought in to help investigate her disappearance.

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.

To save the life of an elderly local who rejects an operation because he believes bad spirits surround the 4077th, Colonel Potter permits a Korean exorcism.

The 4077th is deluged with patients and their individual medical histories. Then they run out of blood and everyone is donating at 48-hour intervals.

Colonel Potter turns crotchety when he catches the mumps, and his condition is worsened when Winchester gets the same disease and has to be quarantined with him. A temporary replacement surgeon, Newsome, is quickly brought into the 4077th and seems to be a gem in terms of both personality and ability.