The novel describes that in the mid-to-late 25th century, extragalactic galaxies targeted the earth for energy and launched a war to invade the earth. In the war to defend the earth, an army led by the United States emerged. At the same time, it tells the story of Mal and his son Culkin's dream of being a general and a dream of power in the US Navy in San Francisco. In the face of crisis, which one is more important?