Syaoran and his friends were successful in collecting Sakura's memories and defeating Fei Wang. However, in order to release Fei Wang's last spell, Syaoran had to pay the price of continuing his journey." He parted with Sakura and once more, accompanied by Kurogane, Fai, and Mokona, travelled to a parallel universe!"
In the land of Nirai Kanai, there are two realms, one that is the “outside” world, and another that is “inside” and hidden from the rest of reality. At the request of the holy Himegami, Syaoran ventures into this inside realm to investigate an anomaly, but what he sees there is very different from what Fai and Kurogane see. What does this discrepancy mean, and what can they do to overcome it?!