At the beginning of time, there were two great forces, the forces of light led by the Light Spirit, and the forces of darkness led by the Dark Lord, thousands of years passed with the two forces controlling the land inhibited by the human race, but in the depth of darkness the Dark Lord held the unspoken desire to control everything alone.
He started to raise a secret army of dark warriors, orcs, and monsters, to take over the world of mankind, the world was in a moment of extreme danger, and in the darkness of the night the dark forces swept over the world, killing all who stands against, and scattering the rest, the cities and the kingdoms which were once lighted by knowledge, art, and wisdom, is now inhibited by the darkness, and the human race fell into the shadows and turned into slaves, the powers of the Dark Lord improved, and his army expanded to a great deal.
The light forces fought against the darkness, but it was an unbalanced fight, as the powers of the Dark Lord surpass that of the Light Spirit, the light forces were defeated, and the dark ages begun.
The struggle continued for many years, the forces of light and the humans who managed to escape from the dark forces, slowly formed the Army of Light, and started to repel against the darkness, however their powers were no match for the rising powers of the Dark Lord, until a young hero emerged to defy the darkness. He was chosen by the Light Spirit to wield the sacred Sword of Light, and fight the evil in its own lair.
A great war was destined to occur, the forces of light and the humans led by the young hero fought the forces of darkness, the war continued for many years until the young hero managed to conquer the Dark Lord in a great battle, he stabbed the Sword of Light into his dark heartless chest, the darkness was defeated, and it's army shattered among the worlds, however, the hero was mortally wounded, and his friends buried him with his sword in the temple of the Light Spirit.
The light returned to the world of mankind, the cities and kingdoms rebuilt, trees started to grow again, the knowledge, arts, and innovations flourished the hearts and minds of all humans, it was time for peace, joy, and happiness.
However, the Light Spirit had doubts that darkness may return someday, more powerful and more evil, so she gathered with the help of the humans a replication of all the knowledge, arts, innovations and creative inventions of mankind, and kept it safe in the mystical city of Uduria.
The Udurians were an advanced people, they mastered the wisdom of the life's elements, they promised the Light Spirit to keep the mankind's legacy safe, they hid it deep inside the city and locked it with a magical round key, and gave it to the Light Spirit, the Light Spirit divided the key into four pieces, and hid every piece in a different world, the world of fire, the world of air, the world of water and the world of earth.
All this was forgotten for centuries, generation after generation the humans forgot all about the great battle and the young hero, they tend to go in their daily normal life, and all what has been left was a legend about the ultimate creations of mankind that was held inside an ancient city, the city of Uduria.