Two couples matched by a swapping service provided by a certain company.Although the reason for registering was different, the compatibility was the best.The first swapping is in front of each partner.There was a tense atmosphere at first, but that quickly changed.By actually having sex and watching it, you will be wrapped in excitement and pleasure that transcends immorality.Two couples obsessed with the charm of swapping gradually immerse themselves in extreme play.Pursue further stimulation by using toys or having sex where someone might see you.Swapping true story of two couples who dabble in immoral activities and fall into the depths of it.