Kosaku Tori, an ordinary office worker in the advertising department of a major electrical appliance manufacturer, has been married to his wife Tsuruko for nine years and has a daughter in primary school. By chance, he begins an affair with Yoshie, a showroom hostess.　 Drowning in her sexy physique, Kosaku sinks deeper and deeper into the abyss of his desires. However, an affair is an expensive affair. Using his credit card and cancelling his staff travel pass, Kosaku becomes increasingly consumed by his relationship with Yoshie. Then one day, Tsuruko finds a pager in the corner of their bedroom. It contained a love message from Yoshie to Kosaku...!