An old man investigates a soapland in an attempt to rehabilitate the underage girls who work there. However, the prostitutes there are not underage, they are clearly students. When he refuses to serve her, she cries, saying "I'll get scolded by the staff," and tries to serve him with her immature body. His groin reacts contrary to his sense of justice. Unable to suppress his sexual desire, he ends up accepting the girl's service.