Beautiful and stylish office lady Black Wood Nami has both her job skills and looks going for her. She's incredibly popular at work, but for some reason, her favorite male colleague seems to be fading away... One day, Black Wood and her junior, Okada, find themselves accidentally booked into the same room at a hotel during a business trip due to a reservation mix-up. The air conditioner in their shared room happens to be broken, leaving them stuck together for the night. Although recently married, Okada is nervous about sharing a room with Black Wood, but he finds himself forced into spending the night with her against his better judgment.

仕事も出来、美人でスタイル抜群のオフィスレディ黒木奈美。職場での人気も高いが何故か彼女のお気に入りの男性社員は抜け殻のようになってやめていく…。ある日、黒木と後輩の岡田は出張先のホテルの予約を間違って残っていたエアコンの壊れた部屋で相部屋となってしまう。最近結婚した岡田は黒木との相部屋を気にしていたが、強引に押し切られ一泊することになってしまう。