Peter Manikhin has everything - money, a beautiful wife, a huge house where there is a place for both a faithful bodyguard and a girl who has become almost a daughter to Peter. But a terrible disease branded him, turning his face into an eerie bronze mask. Doctors admitted that the matter was a slow but continuous poisoning of Manikhin’s body with arsenic. What is this - punishment for a long-standing sin? But it turns out that then someone from the family was involved in this? Peter is confused. He cannot suspect his own people. And, it seemed, when there was no longer any way out, the ambulance doctor Alexander Menshikov came to the rescue. But until the very end of this story, the young doctor still does not know who he is helping - the victim of a criminal or a person who has sinned terribly long ago?..