Shao Xuan joins a friend on an expedition to a recently discovered archaeological cave. After picking up an ordinary stone, he transports himself to another world and wakes up in the body of a small orphan child. The world is still in its Stone Age, where people use primitive stone tools, and their ways are savage. These people possess superhuman strength, can jump higher than trees, and punch stones. They can even cultivate their bodies. Despite these abilities, survival is tough due to food scarcity. Together with his pet wolf Caesar, Shao Xuan struggles to survive in this harsh world.