A hardworking salaryman husband has been working late every day at his office, trying to impress his boss Mr. Kudō. One day, he comes home accompanied by none other than Mr. Kudō himself! It turns out that they are going on a business trip together to a branch office outside their prefecture next week. For some reason, even the wife of one of his subordinates, Natsuhana, has been asked to join them. Although she was confused, she reluctantly agreed after being pressured by her husband, who claimed it was for a promotion evaluation. The following week, they all arrive at a remote mountain hot spring inn where Mr. Kudō makes lewd advances towards Natsuhana...

連日遅くまで残業残業で頑張って働いているサラリーマンの夫が、ある日上司の工藤専務を連れて帰宅してきた。聞けば何やら、来週から県外の支社へと地方出張に出かけるとの事で、何故かその出張に、部下の妻である夏帆までもが、同行するようにと、工藤専務殿から言われてしまう。戸惑う妻だったが、夫から昇進の査定の為だからと頼み込まれて仕方なく了承する。そして翌週に訪れた山間の温泉宿で、上司に卑猥な接待を求められ…。