Sandra’s twin sister is dead. Both sisters were not in touch for quite a long time; mainly because they were so different: to make it simple, Sandra was the Good girl, and her sister the Bad one. Now the dead sister invites Sandra to have a taste of what her supposedly easy way of life was really like. She sends her the keys of her flat, warning her that many other people have these keys as well. That’s the beginning of the story. And normally in most porn stories you would expect Sandra to become as depraved as her sister but indeed in this movie Sandra’s behaviour becomes more and more ambiguous. What is happening to her?