Hiroshi Sakaguchi and his family move into a new house. They are curious about the house next door, which has only one window. They discover that the inhabitant, a middle-aged woman, is never seen; but neighbors have spotted a figure at the window during the night. When Hiroshi goes to bed he hears a voice calling to him and sees a woman's rotting corpse walking towards him. She invites him to come over the following night.
Hiroshi thinks it was a dream, but the following night hears the voice again, now angry that he didn't visit. He looks out of the window to see the woman trying to climb across to his room using a long pole. Hiroshi knocks the pole down and runs into his parents' room, calling for help. They can't see anything outside, and are not sure whether the woman is real. After some discussion the family agrees that Hiroshi will switch rooms with his parents.
The woman doesn't reappear, and Hiroshi eventually moves back to his old room. When he goes to sleep, the woman comes back, trying to knock on his window. Hiroshi waits but she never arrives. He knows she is still trying to reach him because now the entire window of her house is trying to reach aross to his. The family is talking about moving to another house.