Colonel Flagg shows up at the 4077th convinced Hawkeye is a Communist sympathizer.
Frank is left in charge while Henry is away, and Frank forces Hawkeye to fill in as officer of the day.
The 4077th and friends convene for their weekly "Medical Conference," A.K.A. Poker.
Hawkeye bills the army for his medical services, setting off an investigation, while Charles is forced to investigate the healing power of acupuncture.
Margaret tries to get to Tokyo to celebrate her birthday while Klinger starts a betting pool on the birth of a calf.