Ten years after the apocalypse began, Shu Fu awakens a D-rank voice-control ability and unexpectedly becomes engaged to Song Yinshi, who has awakened an SSS-rank lightning ability. When monsters from the Zero-Dimensional Rift launch an attack, Shu Fu discovers that the villain is actually her own mutated younger sister. To save Song Yinshi, she sets out to uncover the truth about the Zero Dimension and grow stronger...
