Haruhiko is a dull middle-aged man living in an apartment. One day, a beautiful woman named Sayaka moves into the apartment next to Haruhiko's! When Sayaka comes to greet him, he learns that she is married. However, when he looks at her chest, he can see through it... and she is not wearing a bra. Haruhiko cannot hide his excitement at this surreal event. The image of Sayaka a bra keeps running through his mind...