Chihoko Kado, 27, married for four years, no children. She married her sailor husband at the age of 23 and has been living along the Kyushu Monorail line ever since. However, when her husband goes out to sea for work, he doesn't return for a week, leaving Chihoko with too much time on her hands. She starts a part-time job three days a week. The conversations among the housewives at her part-time job are filled with exciting topics like infidelity. Having been sexless for over two years, Chihoko decides she wants to have an exciting experience too and applies for this opportunity.