The story takes place in a remote countryside, where a woman named Kyoko Nakajima and her husband move from the bustling city to this area due to a company transfer. She quickly befriends a nearby neighbor named Yamata because she believes it is important to have a wide social circle to live and work easily.
Since the man living close by is a moving company employee, they have a lot of time to chat with each other. Nakajima proactively contacts Yamata to help her move her belongings. It seems that both of them have developed feelings for each other without realizing it, and instead of slowly progressing into an affair, they rush into it, likely out of fear of being discovered by someone else.
And Nakajima is the one who takes the lead, continuously 'attacking' Yamata. The lustfulness of a married woman is clearly visible on her face, especially with that beauty mark...