The conspiracy of a group of women from the harem to an ancient house in the mountains.
She was the bewitched Siyin, who was brought back from the common people to the palace by the queen to protect Prince Chongyang. She was as beautiful as a flower and kind-hearted, but the queen only allowed her to be Chongyang's lifelong maid. In order to save Longcheng, who was possessed by evil and wanted to be the crown prince, she made a deal with the old woman in the cold palace. Finally, she was imprisoned in the old house in the mountains for eternity. She was heartbroken, but she could only wait for the legend for the sake of the child in her belly. After waiting alone for a thousand years, three urban youths from the 21st century accidentally broke into the old house, and a death game kicked off...