At the beginning of the Republic of China the remote town of Gulou in the North has been plagued by the mysterious disease - 'Skeleton Syndrome'. Patients suffer from speech and behavioral disorders, suffer from anorexia, and soon become living skeletons. In the town of Bones, a young girl Sanjian has been learning the art of hunting under her master, Sun Laohai, since she was young, and has developed an excellent archery skill. So the girl secretly vowed to hunt the notorious Black Beast for life as their mission, so often wandering in the nearby hazelnut forest to find the monster traces.
After incident at Tumu Fort, bodyguard Yang Shan and his team to escort the emperor Zhu Qizhen back to the capital, and Dragon Gate became a crucial turning point.
The movie tells the story of the scientist Chen Jing who learned that the fiancé was attacked by a giant crocodile and resolutely joined the expedition. However, the initiator of all this is the boss of the fiance. In the position of protecting the environment and ethics, Chen Jing fought against the evil forces and eventually won the victory. The film mainly shows the choice between scientists in the face of illegal scientific research and personal ethics. The protagonist Chen Jing has always stood firm and determined to draw a clear line with illegal behavior, to protect the environment and fight against evil forces, and ultimately to defeat. The villain protected the experimental results.
20 years before, a middle-aged man lost his way in the mysterious deep forest in the midnight. After several days, he came back to village. However, as some strange things happened in the village, villagers thought the man was haunted by ghosts. After 20 years, the man had become the boss of a small restaurant, but he was still immersed in his horrible memory 20 years before. Afterwards, many mysterious things happened one after another. Therefore , Feifan, an editor ,his girlfriend Shuya, a hypnotist and their friends decided to go to the forest and uncover the truth 20 years before, and the man acted as their guide.