As the crew of Mirai accepts their indefinite existence in the wartime past of Japan, their attention turns toward using their powers of knowledge and technology for good. The goal of Mirai: to rescue the people of the 20th century without the use of weapons. Thus begins the delicate balance of loyalty to Japan's cause, and neutrality with its opposing nations. As the true intentions of key players are revealed, the crew of Mirai is forced to relinquish their stance of cautious neutrality and take action that would both compromise their loyalty to their country and alter the course of history. Practice battle drills transform into real-life combat as the true enemy of the Mirai becomes increasingly unclear.