Most people believe that the people living on the Earth are the only people alive in the whole universe. That is the story the government told them. But is the government telling the truth? Most people also think the Earth is round, but what if it wasn't. What if, in reality, the Earth was flat and we were being tricked into knowing it. It turns out the Earth is flat, and there are creatures living beneath the surface that we haven't even heard of. They call themselves "The Hidden."