After a fierce battle, the Chaldea group succeeded in destroying the Fantasy Tree of the fifth Lostbelt. Now, only the sixth and seventh Lostbelts remain... However, the observation lens SHEBA projected a result predicting that the collapse of Earth has begun. To avoid the end, Chaldea set foot on the mysterious island where fairies live, the 'British Lostbelt'.

The Storm Border landed somewhere in Britain, but due to a mysterious fog, the Chaldea group lost their way and everyone became scattered.

Guest wakes up in a mysterious forest in southern Britain, having forgotten both their memories and their name. You encounter a fairy with blonde hair and green eyes.