An extreme sports team is trapped in the raging sea of the South Pacific. The bloodthirsty shark outside the shark cage attacks like a premeditated hunt? Former champion Ling Feng watched the sharks crash into the wreckage with precision, and suddenly noticed the metallic luster on their teeth - the remains of experimental equipment. What's even more frightening is that the old log in the ship reads: "They are evolving, learning, and taking revenge..." Biological experiments that were covered up a hundred years ago turned humans into "cage prey" for sharks. In this life and death game, who is the hunter? And what dark secrets are hidden behind the wisdom of the sharks?
