In order to break up the monotony of their lives, a young couple invites an old friend and an unknown woman to stay the night. All of them are absolutely unaware of the real reasons behind this invitation. Suddenly, the frank conversations baring hard feelings of house owners become confessions that threaten to undermine the couple’s weird plan. With their affections withered, both hosts and guests are overcome by new strong feelings between them. But a real danger of attraction comes up as the mysterious inconnue is not the one she claims to be.