It takes four people to swap wives. Or is it less? Two married couples decided to conduct perhaps the most important sexual experiment of their lives. They agreed to meet at a hotel at a specific time. But the universe, as usual, made adjustments to people's plans. A blizzard caused one of the participants to be late. But It's a bad plan that can't be changed. The remaining participants had to improvise - and in the end, it seems that literally everyone was satisfied.