Deep in an old alley in the capital, there is a century-old courtyard house that is said to be the foreign residence of a convicted prince of the former Qing Dynasty. The new tenants encounter strange things one after another (ghosts pressing on the bed, auditory hallucinations, items being moved, and figures in ancient costumes being seen). The developer wanted to demolish the property, but accidents happened one after another. The intervention of Lin Wei, a new investigator from the official "Folklore Affairs Research Institute" (a capable person who believes in science but is gradually wavering) has no results.