Chiho Kadokura is 27 years old, married for 4 years, and has no children. She married her sailor husband at the age of 23 and has been living along the Kyushu Monorail since then. However, when her husband goes out to sea for work, he doesn't come home for a week, so Chiho, who has a lot of free time, starts working part-time three days a week. The conversations between the housewives working there are all about infidelity and other stimulating topics, and Chiho, who has not had sex for more than two years, decided to apply for this job, wanting to have an exciting experience herself.