[Machine Translation] In the 25th century, many land areas were submerged due to submarine uplift caused by the activation of hot plumes. Having overcome the unprecedented crisis and turmoil, human beings are once again enjoying prosperity. The land-based people maintain an advanced information society on the remaining land and in maritime cities, while the maritime people live on the sea in biological vessels called "fish boats". As the feud between the coalition of land-based nations and the maritime community gradually deepens, Seiji Aozumi, a diplomat of the Japanese government, meets with Tsukisome, a female chief of the maritime community, to resolve the conflict between the government and the maritime community in the waters of Asia. The two understand each other's position, but the bureaucratic wrangling between government officials and the agendas of various national alliances stand in the way of their mutual understanding. At the same time, the International Union for Environmental Research (IUER), sensing the signs of another severe ordeal to befall mankind on this planet, proposes a top-secret plan to save the planet. Based on the latest earth and planetary science, this apocalyptic marine science fiction epic depicts the fate of the earth and mankind head-on.