An artist named Jiajia promised to show her boyfriend, Wei Ling, around Japan but eventually fails to show up for no reason. After Wei Ling goes and gets accommodated in a family-run host spring hotel of Shimizu, Jiajia’s Japanese boyfriend, she brings her endless weird experience as if she’s haunted, and the hotel even sinks into a series of horrible homicides, in which the victims are all members of Shimizu’s family. Every clue found is connected to Jiajia. Shimizu’s servant Tadao begs Wei Ling to help them discover who the murderer is - But whether Jiajia is dead or alive, along with the identity of murderer remains a secret, until the very end.