Taking place two years after Yuna's fateful journey to defeat Sin the once chaotic world of Spira hasgone through a massive transformation entering a period of "Eternal Calm". The people of Spira now shun the teachings of Yevon and have opened their arms to former foes the Al Bhed and the use of machina. The Machine Faction aims to propagate the use of machina in Spira going as far as renaming "machina" to "machines" to remove the stigma. However even with the peaceful life they now live there is an emptiness in Yuna's heart that is keeping her from moving on as the others have.One day Yuna obtains a mystical sphere that contains imagery of what might be the Blitzball player shethought was gone forever. Although Yuna isn't certain that it is him or if he is even alive she's driven toseek him out. Yuna needs closure to their unexpected parting even if only to find that she will never seehim again. So begins her journey...
