Honkaku meets Grand Guignol amidst a string of grisly and horrifying murders. The floor plan of the manor, specially built for entrepreneur Jingfu Bai, traces the Chinese character for rain. Shortly after construction is finished, Bai and his wife and daughter are slaughtered and the culprit hangs himself in jail. Now, a year later, Jingfu’s brother has inherited the manor and decided to stay there for the summer with his daughter. She invites a number of friends and, sure enough, one-by-one they are slaughtered in impossible circumstances…