After getting married and moving into a public housing complex, Kaori feels slightly uneasy in her new environment but gradually grows closer to the other housewives. Her neighbors, a couple close in age, quickly become good friends. One day, the male neighbor claims he has lost his house key and asks Kaori to let him in. That moment marks the beginning of everything. Forced and roughly taken against her will, Kaori slowly begins to have her emotions stirred. Her inner turmoil and shifting feelings throughout the experience form the core appeal of the story.