Qian Cheng, the boss of the pharmaceutical company, has invested in the establishment of a biopharmaceutical research laboratory located deep in the jungle. By modifying the shark gene to develop a new type of anti-cancer drug, but when the drug is about to be put into mass production, a huge crisis also came quietly: due to the change of the shark's gene, the gene mutation was fierce and showed the characteristics of other organisms.

Wu Shuang, a house tester, checks into a foreclosed villa on a rainy night. Together with Nian Lun, an amateur blogger, they keep dealing with the "strange occurrences" inside the house and gradually piece together the truth behind the former homeowner’s family tragedy...