From the introduction:
The elves were the first people, the blessed, immortal children of the spirits of the One True Flame. They were made perfect, beautiful, and graceful, given the ands of the West to rule over eternally, The Land of Twilight, where the Two Trees rose bearing the Light of the World...one of silver, one of gold.
But the Enemy had always lurked in the Darkness Beyond, jealous of creation, desirous of its bounty, and time had not stilled his frenzy, or tamed his desire, only inflamed it and encouraged his plots. Disguised as a great spider, the Enemy came to the West and crept across its plains to the Halls of the Undying, from where he stole the light from the Two Trees and fled with it across the icy seas, to the black northern wastes of the East, so close to the Darkness where he had spent eternity hidden from the One True Flame.
It is a time before, of myth rather than history, when the great wars of the elves were fought against the hordes of dark beasts twisted by the Enemy. This is no time of men or goblins, but a time when the First Children of the World took up their swords and bows and chased the Enemy to his black fortress in the icy North, when they battled demons, werewolves, dragons, and more hideous things of the Night which whole nations of men would learn to fear, yet a single elf would face in titanic struggles of armies of light against armies of darkness.