A renovation worker named Iwasaki Noriko suddenly appears in Ichiro Yamada's life. Trying to push a contract on him, she grows frustrated by his lack of interest and resorts to seduction. Despite his confusion, Yamada gives in to her advances and enjoys passionate sex with her. Overwhelmed by her intensity, he ends up transferring her the money. Later, he realizes he's been scammed—but he can't forget their encounter. Tracing her through contacts, he discovers "Iwasaki Noriko" is an alias, and her real name is Nakameguro Junko.