『美優』は夫が仕事で忙しく、夫婦の営みが無くて毎晩寂しい思いをしていた。ゴミ捨て場で会う彼女の‘浮ブラ’を見るのを、フリーターの『奥村』は楽しみにしていた。ある日、ふとしたきっかけで会話する事となり二人の距離は急接近していく。イケナイ事と分かっていても彼に対する気持ちを抑えきれなくなり、超えてはいけない一線を越えてしまう…。

Miyu's husband is busy with his work, and she misses him every night because they don't have sex. "Okumura", a freelancer, looks forward to seeing her "floating bra" at the garbage dump. One day, they happen to have a conversation, and the distance between them gets closer. Even though she knows it's wrong, she can't control her feelings for him and crosses a line she shouldn't...