A chance to change your life. This is exactly what the advertisement in the newspaper promises, to which journalist Walter Levinson responds out of boredom. And this time the advertisement does not lie! Walter's life soon really changes - or rather, turns into a nightmare. From now on, he is constantly being watched by a mysterious man named Beckerson. Who is he? What does he want from Levinson? Why is he trying to drive him crazy? Walter understands that he, like the heroes of ancient legends, sold his soul. But who is the buyer? And most importantly - how to break the sinister contract?