The game takes place in Spira during the Eternal Calm, two years after Final Fantasy X. It continues the story of Yuna, who has become a sphere hunter and a member of the sphere hunting group, the Gullwings, with Rikku and Paine. Yuna hunts for spheres to find clues about a mysterious man who looks like her lost love Tidus. However, she becomes entangled in political turmoil the Gullwings must resolve to prevent a war, uncovering a plot to destroy Spira with a secret weapon from its ancient past.