The world 10,000 years ago was mysterious and remote. On the Dabai Mountain, which is covered with snow all year round, lives the Yagao tribe who make a living by hunting. They are good at hunting mammoths, but as there are fewer and fewer mammoths, the Yagao tribe is gradually coming to an end. An old mother with precognitive ability made a prophecy before she died: The Yagao tribe will face four...