When does a person blackmail another person?
When he realises that he is being screwed upright behind his back and still expected to believe that things are hunky dory between the mundane episodes of life.
Well, that’s exactly the plot here. What you are bracing for is an entertaining series of encounters and the fetish yet evil face of human adversity. One follows another, a vicious circle develops and ends up destroying each of their lives. Well, you can argue if they ever had one.