First World War. A young widow arrives at an abandoned estate that once belonged to her ancestor, the favorite of Empress Catherine II. Life in the old manor is gloomy and dangerous, the estate is full of ghosts, and it is impossible to give any other explanation other than mystical ones for what is happening here. The heroine is already close to despair, but her cheerful friend, a lover of dangerous adventures who never loses her head from fear, comes to the estate...