As a deepening crisis threatens to plunge the floating world of Cocoon into chaos, a band of unsuspecting strangers finds themselves branded enemies of the state. With the panicking population baying for their blood, and the military all too happy to oblige, they have no choice but to run for their lives. Join them on a desperate quest to challenge the forces controlling their fate, and prevent untold destruction.

There is a Cocoon, which is a utopia in the sky, which its inhabitants believe is a world of paradise. Under the sanctum's rule, Cocoon had long known peace and prosperity. Mankind was blessed by its protectors, the benevolent fal'Cie, and believe that tranquil days would continue forever.

Their tranquilty was shattered with the discovery of one hostile fal'Cie... The moment that fal'Cie from Pulse - the feared and detested lowerworld - awoke from its slumber, peace on Cocoon came to a swift end.

The Fal'Cie curse humans by turning them into magic-wielding servants. They become l'Cie, the chosen of the fal'Cie. Those that become branded with the mark of l'Cie carry the burden of either fulfilling their Focus or facing a fate harsher than death.