Yuki and Tetsuya have been married for two years and have moved to the suburbs. One day, Yuki is invited by her neighbor Makiko to attend a tea party. However, what she sees there is a "confession game of erotic experiences" in which participants are wearing gowns...

Reiko, a neat and intelligent married woman, runs an English conversation school for middle-aged and elderly people. One day, one of the students, Shindo, spots Reiko in town and gives her a ride home, but discovers a large amount of rope in the luggage she left behind...

Rika (Tsubaki Kanari) remarried Makoto, who had lost his first wife. Having lost her parents at an early age and continued to live in poverty, Rika was able to achieve a stable life by marrying the wealthy Makoto. However, they continued to live apart due to Makoto's busy schedule, and their feelings for each other began to change. Rika also found the presence of Yuko (Satomi Yoko), a live-in housekeeper who had been working in the house since Makoto's first wife's, to be an eyesore. When Yuko wasn't looking, she would sneak around with journalist Yuji, claiming to be attending a painting class. One day, Rika saw a positive tweet on her blog, and as the tweet looked exactly like her, a plan came to her mind...