"Country of East" are known for their dictatorship and malicious human experiment towards the underground citizens, while the "Country of West" who speaks "democracy" are notorious for sending their people to the battlefield in the name of freedom. After two great wars that devastated both countries, another one will soon be enacted, which now also joined by several revolutionary armies. Our main character is Leo who seeks for his son while being accompanied by a former imperial slave who had lost both her hands and feet.