Tora always thought she lived in a world where things like war never happened. That was until she escaped The Circle. [The Circle is the name given to the area she lives in. The Circle is a literal Circle, or ring, that houses the remaining humans on Earth]. The circle was meant to protect the remains of humanity left on Earth as we know it. After escaping The Circle [Tora and friends] find themselves face to face with war. [The opposing people in the war look and act like humans. But that's how their programmed to act. They come from Earth but as the years progressed and information was spread through generations, these people were taught to hate these humans from The Circle.] The remaining ACTUAL humans left on Earth were in the war against these people that call themselves human. They started it all. Now Tora [and friends] must fight for their humanity because the "others" [the nickname given to the different humans] are there to destroy The Circle and the remains of Earth as we know it.