一名已婚女子在丈夫公司举办的露营活动中，不情愿地为她心爱的丈夫签订了情妇合同……高梨百惠

高梨夫妇应丈夫公司总裁的邀请去露营。然而，这次旅行其实是社长为得到年轻妻子百惠而策划的阴谋！妻子拒绝签订二奶合同，尽管丈夫被降职，但仍对丈夫忠诚。最终，她还是压抑住了自己的声音，明明丈夫就在身边……

The Takanashi couple go camping at the invitation of the president of the husband's company. However, the trip was a ploy by the president to get his hands on the young wife Momoe! The president uses her husband's demotion as an excuse to demand a mistress contract, but the wife refuses to stay faithful to her husband. In the end, she holds back her voice even though her husband is right next to her...