Metaphysics blogger Su Jiuyin makes a living by pretending to be a ghost hunter, until a bloody copper coin makes her dream about an underwater tomb every night. The female ghost in red claimed to be her twin sister in her previous life, and asked her to find the "Seal of Reincarnation" within seven days to change her life, otherwise she would lose her body. The countdown begins, and the unsolved case of the parents' disappearance and the fate sealed in the body are revealed one by one. She must find a third way between the dead, the scam, and the secrets of Feng Shui without killing her sister or destroying herself.