Fate/Grand Order: Ordeal Call 0 & Bleached Earth

The Prologue and Bleached Earth chapter of Ordeal Call.
After having successfully fled the South American Lostbelt, Novum Chaldea heads far south, to hastily return to their former base in Antarctica, but upon reaching the waters of the Antarctic Ocean, they find themselves incapable of breaching a strange barrier. A person known simply as “The Chaldean” tells them they can’t enter because they have strayed too far from the path of Proper Human History during their travels throughout the Lostbelts, and must now embark on another mission before they can return: Ordeal Call.

While exploring the Bleached Earth, they find a mysterious remnant of a former friend near the core of where once stood the Atlantic Lostbelt, seemingly the work of an individual calling themselves “The Count”, and discover that in order to uncover the truth of the phenomenon, they must seek out and defeat four of these remnants in total, scattered all over the Bleached Earth, each holding mastery over a unique elemental power.