Once upon a time, the entire city was shaking in fear from the terrible acts of a maniac nicknamed the Electrician - all his numerous victims died in agony from electric shock. Little by little, past nightmares were forgotten - the captured villain died in prison long ago. But ten years later, the murders are resumed - exactly the same as those committed by the maniac. Is there an unknown Electrician impersonator in town? And if not, then who?.. There is some kind of ominous pattern in all these deaths. Private detective Igor Savelyev and opera Konstantin Prishvin are racking their brains over it. The revealed truth makes the detectives experience what is called terrible horror...