After Serah's death, Lightning enters crystal stasis to preserve her sister's memory and to atone for her past. However, the process goes awry and she is instead pulled from Valhalla. Waking up in an unfamiliar world, her memories have been erased, and now she must search for her forgotten past while dealing with a new threat.

Humanity was given another chance at life, but the new world was far from what was expected. Stripped of the powers that Bhunivelze had bestowed upon her, Lightning feels helpless to protect the people from the harsh new world or the threat that seeks to take it all away from them. Can she find the Savior within herself, or will she collapse under her depression and lose it all?