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.