For many years, no one has dared to settle in the gloomy estate on the outskirts of Gillsdale. Even the servants who maintain order in it try not to stay overnight under the roof of the House on the Hill. But one day, the silence of the infamous house is disturbed by a motley company: researcher of paranormal phenomena Dr. Montague and his assistants - the exalted Theodora, who is good at guessing other people's cards and thoughts, the future owner of the estate Luke Sanders and Elinor Vance, who encountered a poltergeist as a child.