Final Fantasy XIII

The game is set on Cocoon, a vast artificial sphere that floats above the feared lower world of Pulse and is governed by an authority known as the Sanctum. When people are found to have come into contact with Pulse, the Sanctum orders them purged from Cocoon. Lightning, a former soldier, sets out to save her sister, who has been marked as an unwilling servant of a godlike being from Pulse and branded an enemy of Cocoon. Lightning is soon joined by a group of strangers who are marked by the same power and given a shared, unclear task. Together they must interpret what is being asked of them while resisting the Sanctum and facing the threat of being transformed if they fail.