Russia, 1870. A group of young anarchist revolutionaries set out to overthrow the Czarist regime through violence. Their attacks create a climate of psychosis and mutual distrust among the population, but in reality, both revolutionaries and repressors are being manipulated by a diabolical individual.
About a sound designer for films who years ago, while in bed with his mistress, failed to respond to calls for help outside his door. Now during the recording of the audio track for a new film he begins to hear strange noises on his headphones.