A high-priced call girl (Miho Nikaido) catering to yakuza captains and ostensibly respectable heads of industry makes her way through the smutty sex underground of the titular city, witnessing and experiencing sexual degradation, confusion, and despair. The film is a searing, disturbing, and extremely graphic indictment of the twin hypocrisies of excessive materialism and sexual puritanism, which combine to create an exploited underclass of sex merchants forced to feed the perversions of their powerful tormentors.