Description：The film tells the story of Anna, a biological researcher, who is looking for her grandfather who disappeared during a scientific expedition to a mysterious jungle ten years ago. She finds her grandfather's apprentice Dr. Xie and Li Yuhang, the son of her grandfather's former colleague, to form a team and set foot on the mysterious jungle again to look for clues. In the primeval forest, the expedition team has fought life and death with prehistoric pig crocodiles and mutant giant spiders, and even discovered a mysterious creature that only exists in legends - Bigfoot. Just as everyone is immersed in joy, they don't know that a greater danger is quietly approaching...