The year is 2010 AD and Hyper Hurricanes are being born all over the world have cause very bad damage. Five billion people have died which has decreased the population to only 3 billion. The world has been changed severely. Jo Katsuragi and Jin Tsurasawa, escape from Phantom, a force that is to watch the Revenus and to suppress Logos, who take a mysterious young girl, named Sana Nobuto. Many people are interested in her but they all have their own unique reasons.