Return of The Sky Castle

Prologue
Once upon a time, long before the current age, there were four castles representing the natural elements - the Earth Castle, The Sea Castle, The Fire Castle and the Sky Castle.

The Earth Castle lay atop the highest mountain and was ruled by the humanoid Yetis, it is now covered in snow deep beneath Mount Everest.

The Sea Castle once floated above a stretch of Pacific Ocean and was ruled by the Pearl Divers, it has since sunk to the bottom of the Mariana Trench.

The Fire Castle was located atop a great volcano and was ruled by humanoid Phoenixes, it is now encased in cooled magma, which has formed a large casing over the original structure.

The Sky Castle itself was the most majestic of the four castles and was ruled by humanoid Pegasus, it once floated high above the world, moving with the wind much like a cloud - yet with time it simply vanished from Earth altogether, entering a distant dimension for reasons unknown to man, leaving behind nothing but vague memories of its former existence.

So it was that imaginary castles in the sky would become a part of the human psyche, entering innumerable fairy tales and legends - even in the modern age the term "castle in the sky" would come to describe a seemingly impossible or unrealistic dream or ambition.

The other three castles also entered the human mind and thus humans continually explored the remote areas of the world, yet they could not find these ancient castle - which remained hidden from them for centuries..

Yet in the modern age a change was about to occur that would finally break that centuries-old game of hide-and-seek..