While on leave in Seoul, Frank finally cracks up over Margaret's marriage and starts hunting her and Donald down, accosting every female who bears even a passing resemblance to her. Unfortunately, it couldn't come at a worse time as the 4077th is inundated with casualties. Potter then makes a call to Tokyo and requests a surgeon to come in to fill in while the MPs hunt for Frank. They eventually find one in the person of Major Charles Emerson Winchester III, whose surgical skills match his arrogance, causing Hawkeye and BJ to take an immediate dislike to him. Eventually, Frank is transferred out and Winchester becomes a permanent member of the 4077 surgical staff. Now, Winchester must adjust not only to what he sees as inferior surgical conditions, but to the lunacy of Hawkeye and BJ.