Having rescued four schoolgirls from a harem comedy, former villain Aquila, her creator Kasumi, and superhero Captain Infinite are touring the story worlds with their new friends. But when they discover the brutal murder of the protagonist of a dating game, Aquila realizes that the worst has happened.

Hunted by a powerful adversary who will stop at nothing to recruit or kill her, Aquila must now lead her companions to safety. As they flee a war that threatens to consume all of the story worlds, Aquila will be forced to face the sins of her past in a final reckoning that will determine the fate of billions...