Mayuko suffers from severe athlete's foot. She visits a mysterious Chinese man, Zhou, in search of a secret medicine she heard about. He leads her to an abandoned theater, where she places her foot in a box. A young man hiding in the box begins to lick her foot. "Saliva is the cure for all diseases." Eventually, the day of her final treatment arrives. However, Mayuko, who has already gotten used to having her feet licked, does not want to stop the treatment. The Chinese man says to her, "There is a medicine for athlete's foot."
