In Japan, thousand-year old traditions and radical modernism coexist in a state of seeming tranquillity. Under the surface, however, an obscure under-layer persists: erotic entertainment for payment, or Fuzok. Strip bars, S&M clubs, pink salons, theme parties, sexy shops, a thriving market of porn films and comic strips, gigolos for single women, sex schools, pay-by-the-hour hotels and disguise games, every wish can be fulfilled here without feeling ashamed. From elegant clubs to squalid brothels, this documentary explores a remarkably colourful shadow world.