Psychiatrist Sidney Freedman composes a letter to Sigmund Freud during a visit to the 4077, while the rest of the camp endures the hijinks of a mystery prankster.

Hot Lips, believing herself to be pregnant, asks Hawkeye to test her. The only rabbit available to use for the test is Radar's pet, Fluffy. Meanwhile, Martinson, a patient, holds Charles at gunpoint, demanding he be sent back to Ohio.