Nami Kuroki is an office lady who is good at her job, beautiful and has an outstanding figure. She is very popular at work, but for some reason her favorite male employee becomes a shell of himself and quits... One day, Kuroki and his junior colleague Okada end up sharing a room with a broken air conditioner because they made the wrong reservation at a hotel on a business trip. Okada, who recently got married, was interested in sharing a room with Kuroki, but he was forced to stay overnight with Kuroki.