Nami Kuroki is an office lady who is good at her job, beautiful and has an outstanding figure. She is very popular at her workplace, but for some reason her favorite male employee becomes a shell of himself and quits... One day, Kuroki and her junior, Okada, accidentally booked a hotel on a business trip and ended up sharing a room with a broken air conditioner. Okada, who recently got married, was concerned about sharing a room with Kuroki, but she was forced to stay with him for the night.