A single choice can change everything. Lightning sets out to save the people for a new world, but when she accepts the one who destroyed it as her reluctant ally, what was to be quickly comes spectacularly undone. ["what if"/full game rewrite]

"I must complete my Focus." Lightning is given the chance to reset the timeline by preventing Caius from receiving the Heart of Chaos, but only by traveling to Gran Pulse's ancient past and befriending him. Meanwhile, Serah and Noel struggle through the strange future left in her wake and find an entirely new timeline awaiting them...