A damaged world, wild and full of dangers. Not many humans are left, just one little city, or not a city at all, more some kind of a hidden place with a big wall and some weapons. Their resources are limited. Not much water, food, nearly no electricity and no machines or any electrical equipment. So they started building robots for the help to hunt, to collect fruits, electrical parts, tools and machines of the old world.
They don't know if there are any other survivors out there, in the deserts and jungles, the nature takes back all the human cities and roads. After all this atomic tests and wars in the past the complete environment changed in a really bad way, mutated plants and animals and even more dangers, which they don’t even know about. Some survivors travelled out to find answers, but they never returned. So they started building the robots. They have already build heavy robots with big guns and armour, for defend their base. But they are too slow and need too much energy when they go outside for exploration. So we built this new series, fast and light robots, which collect information about the environment and got messages if they find any other survivors or tribes. So Running Willy B-109 is out there, and making hundreds of kilometers, collecting information and searching for other humans...