Natsume Shouko, married to Takashi, she has a daughter called Mika and a son called Masaru. Her life is unexciting and has been for a long time, her husband only cares about work, they have had no sex for a long time, Shouko's sexual pleasure only comes from masturbating.

One day while on the internet she finds a peculiar website, it was an adult website in which those that want sex slaves and those that want to be sex slaves gather! Those that wanted to be sex salves would fill an application form and then be selected by someone.  Shouko thought this was a joke and out for mere curiosity and a little excitement she felt, she fills an application form, she was not serious of course and gave it not much thought...