深夜，档案局原馆长余望然（饰演：郭九龙） unexpectedly encounters a crimson-cloaked spirit, followed by a sudden heart attack that claims his life. The following day, Balance (李威 饰) - the son of the current archivist - receives an intriguing legacy from his late grandfather: a book titled "Dreams in Scarlet," containing a beautiful photograph of a woman from the Republic of China era hidden within its pages. This serendipitous discovery transports Balance's thoughts to far-off North Beijing during the Republic period. The ghostly presence of an individual named Hu Siren (冤魂), who seeks justice for his unresolved grievances, haunts the Red Mansion, where Balance and his brother reside. Hu Siren bestows upon Old Balance three blocks of gold coins, urging him to journey to Hu Family Cliff to find Hu Sister (饰演：梅俪儿) - Hu Siren's daughter - so that he may finally rest in peace. Touched by the tale of injustice, Old Balance enlists his son's help in uncovering the truth behind Hu Sister and her family's tragic history. As they delve deeper into the mystery, the Red Mansion is plagued by a series of spine-chilling supernatural events, slowly revealing the terrifying secrets buried beneath the surface......
