They all believed she was gone forever, never to return. Everyone, that is, except Serah Farron. She clung to a different truth.

Lightning! Could she be alive? Could her beloved sister really be in that world of chaos and death, fighting to save a dying goddess? It does not take long for Serah to make the fateful decision. She accepts the weapon that Lightning has gifted her, and resolves to follow this stranger into the future...

Three years after the events in Final Fantasy XIII, Lightning has gone missing, and Snow is nowhere to be found. In a rebuilding world, Serah notices that something is amiss. After a fortuitous encounter with a mysterious man named Noel, the two set off to find Lightning.