Fifteen years have passed since the world was nearly destroyed according to the mysterious Book of Prophecies. Japan is now dominated by Friend, whose influence reaches almost every part of society. Kenji has disappeared, leaving his niece Kanna to grow up in a world shaped by his past.
As Kanna begins questioning the official story surrounding Kenji and Friend, she encounters a growing underground resistance. Strange clues lead her back to the childhood games that started everything.
With Friend preparing for another terrifying prophecy, Kanna must uncover the truth about the past and decide whether she can succeed where Kenji failed.