A civil engineer moves in next door to married woman Hiro, and when he comes to greet her, he looks at her with lewd eyes. Unable to bear the civil engineer's bad behavior, which includes making a lot of noise at home every night, watching AV at full volume, and not separating the trash, Hiro complains. Angered by the complaint, the civil engineer, who had always thought she was a good-looking woman, takes Hiro into his house and attacks her.