Terako is a young woman without a job. She has an affair with Iwanaga who is married. His wife is in a coma. One day, Terako's friend kills herself. After that, Terako sleeps all day long and wakes up only when Iwanaga calls her.
Terako is in the midst of an affair with a married man named Iwanaga as his wife lays in a coma. Terako's best friend Shiori earns a living as a "soineya"-someone who sells the act of sleeping in the same bed with people. When Shiori commits suicide, Terako is devastated and begins spending more and more time sleeping as she becomes overwhelmed with loneliness.