 Today, in the year 2661, mankind lives in gigantic cities underwater.Aqua is divided into political power blocs, such as the Aquatoria of the capitalistic, democratically governed Atlantic Federation, the oligarchy of the Arabic Clans Union and the monarchist Russo-Japanese Shogunate.In the South Pacific lies the Tornado Zone, stirred up by surface storms, where an anarchist pack of mercenaries, pirates, buccaneers and outlaws gathers, ever ready to sell their friends and their souls.