Mari lives a comfortable life as a single woman. She has a nice job at a company and resides in an apartment in the suburbs of Tokyo. A couple lives next to door to her. Mari can hear them argue or making happy conversations everyday. One night, when Mari comes back home, she sees her next door neighbor sitting in front of his door and shivering from the cold. He locked himself out.

Shinji (Kawaguchi Takahiro), who wanted to be a writer, impersonates a depraved man by the name of Tokio and sends constant e-mails to his wife Misa (Komatsu Miyuki). Misa eventually succumbs to his passionate e-mail advances, and decides to meet him under the condition that she does so blindfolded.