网页设计师的妻子相原一子和在文具制造厂工作的丈夫相原二也即使无性婚姻、没有孩子,夫妻关系也非常和谐,但是两人有秘密——每个月的第3个星期四晚上,二也会和“恋人”一起度过,结婚第7年的两人选择的是“婚外恋爱许可制”。。On the day of the wedding of a medical student with a wealthy plastic surgeon, the families of the young couple realize that the only thing they have in common are secrets and lies. The secrets of both sides will be revealed during the wedding ceremony.。