A salaryman's husband is going on a business trip to a nearby prefecture next week, so his boss surprisingly tells him that his wife, a part-timer, has to accompany him on this trip too... The unhappy wife reluctantly agrees after being pressured by her husband, who says it's because of an important promotion evaluation. The following week, they both arrive at a mountain hot spring inn where the husband's boss demands lewd entertainment from the wife. She initially refuses but ends up drinking a sleeping potion unknowingly due to her boss's scheme. Note: The contents may vary depending on the distribution method.