Six million years ago our ancestors began to walk upright then left the trees and ventured out into the wild African savanna. For millions of years we would adapt, strengthen, and spread across the planet's harshest terrains. We withstood droughts and ice ages to not only survive, but to become the dominant species on Earth. Could we do it again? (Source: National Geographic)
Living as Siberian hunters in the ice age, Bill and Cat must take advantage of their natural resources to build tools that ensure their survival.
Cat and Bill find themselves in an area rich with natural resources and must find shelter. Luckily, they quickly stumble upon a cave.