While Kaori enjoys acclaim as a novelist, in her private life she feels her relationship with her husband is cooling.
At the same time, her editor asks her to write a piece on the theme of women's real sexual desires,
but her own marriage has fallen into a slump,
and the pressure of writing makes it difficult for her to write.
Amidst this, she meets a man who runs a social club for the wealthy,
and under the guise of an interview, she decides to enter a secret social event known as a "masked party."
There, men and women, hiding their identities and titles behind masks,
indulge in pleasure as if they are being liberated from social oppression...