The team eventually uncovers a hidden underground temple dedicated to an ancient serpent cult, where a colossal monstrous snake serves as the ultimate guardian. To survive the “Relic of the Snake Bone,” Hei Yanjing must navigate pitch-black tunnels and hallucinogenic spores while protecting the surviving members of the original team. The film highlights his supernatural combat reflexes and tactical brilliance as he uses his failing vision to his advantage, culminating in a desperate battle against the giant serpent to prevent a prehistoric curse from escaping the jungle.