You play Takkar, and are part of a Wenja tribe, you are hunting a Woolly Mammoth baby, and successfully kill it, in order to survive, when a saber-toothed tiger attacks you killing everyone in your tribe, but yourself. Defenseless, you have to build new weapons for yourself using the resources available around you. These first weapons include bow and arrows, spears, and clubs. All of which can be lit on fire. You have to contend with day and night cycles, and survive in the wilderness along side woolly mammoths, dire wolves, cave bears, cave lions, woolly rhinos, irish elk, saber-toothed cats, brown bears, badgers, deer, etc.