Heaven and Hell Following a disaster which has left Japan devastated, within a walled area, children are schooled by robots in a place they call "Heaven" and believe that the outside world is "Hell" and populated by monsters. One day, a student named Tokio receives a message that poses the question, "Do you want to go outside of the outside?" Meanwhile, outside the walls of the school, a girl named Kiruko, accompanied by a boy named Maru who looks like Tokio, is traveling through the devastated land in search of two men in a photograph and a place called "Heaven". They eventually encounter a self-sufficient woman living alone on a small farm who gives them food and shelter. However, while the youngsters fall asleep, she prepares for an apparent attack during the night.