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.

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 arrival of a wounded Korean woman sparks a conflict at the 4077th: Hawkeye wants to heal her, but a steely ROK officer, Lt. Park, is more anxious to "question" her about alleged guerilla activities.

On his way to some R&R in Tokyo, a North Korean soldier forces Hawkeye to perform an emergency roadside operation on his buddy.