Final Fantasy X tells the story of Tidus, a star blitz ballplayer who journeys with a young and beautiful summoner named Yuna on her quest to save the world of Spira from an endless cycle of destruction wrought by the colossal menace known as "Sin".

Final Fantasy X-2 returns to the world of Spira where High Summoner Yuna travels with her companions Rikku and Paine to unravel the mysteries of the messages hidden in the spheres she hunts, not knowing that the answers she seeks may change everything.