It had been many, many ages since the Four Giants had ascended into the heavens to watch over Termina, the world they had created, from a dormant state. The land remained tranquil and prosperous, and the population and technology of humans quickly began to grow as time passed.
Humans, of course, were not the only creatures to inhabit the world. Their world had also come to accommodate some terrible beings; creatures that crave chaos, demons that desire darkness, monsters with an appetite for human flesh. They fought constantly, against and amongst themselves. Humans generally had an easy time defending themselves by banding into small hunting-and-gathering tribes.
However, the humans could've never been prepared for the swift and unforeseen rise of the great dragon, Majora. He was a large beast, the height of 3 grown men and just as long. His whole was draped with thick, white, low-hanging fur except for his face and tail. He wore thick, impenetrable armour on his lower back that followed to the tip of his tail. The ends of each of his four feet bore three massive, black, razor-sharp talons. His mouth was beaked and three large horns protruded from the sides of his head, just behind his narrow, sinister eyes. The dragon's physical strength was only matched by his magical might; he had the ability to raze fires from nothing, summon freak storms, and even control the winds themselves.
Majora began his conquest quickly by traveling from tribe to tribe, settlement to settlement; causing great havoc and destruction with his both physical and magical forces, making sure every corner of the world would know his name only speak it with fear. Eventually, he had every human tribe and settlement and every race of monster submit and heed his words. Once he was sure he had total control over Termina, Majora made one final act of dominance. He had an ace hidden up his sleeve, and just when the habitants of Termina thought they had seen the full extent of Majora's wrath, on the third night after he had effectively taken control, he froze the passage of time, locking the world in eternal nighttime.
He was able to do this through simply asking it of his armour. Legend said that his armour was enchanted, and held magical properties, one of which being the ability to grant one wish to whoever the wearer be. Majora himself knew this to be true and had waited until this very moment to use this ability.
Now with the land trapped in infinite darkness, Majora ruled with an iron fist. Many years passed with humans under suppression by their vicious king, and eventually day by day hundreds of adventurers, travelers, and courageous men would seek Majora's presence to challenge him for kingship. Some went with the hope of liberating Termina of its cruel tyrant; others were drawn by the allure of his armour and the power it would bring. Whatever their desires, Majora devoured them all.
Humanity's future appeared bleak at best. With their numbers dwindling and their hope fading, most of the populace turned to prayer. It was then that the Four Giants realized that they needed to take action.