The Triforce, as it has come to be known, is trio of ancient and magical stone-like triangular runes, created centuries ago by an alchemist whose name has been lost to time. As Hyrule's kingdom developed, these stones were discovered and have been used to protect the land, due to their powerful properties, consisting of the Triforce of Wisdom, The Triforce of Power, and an unknown Triforce that the people of Hyrule were never able to find. Made of an unknown substance, each Triforce is able to be fragmented and put back together by only the most skilled alchemists and wizards. Though they can grant their users mystical powers and be an aide, using a Triforce can be dangerous and unpredictable, and can corrupt even the most strong-willed of individuals; one of the reasons Hyrule has kept them locked up and guarded.
Fearing a siege of her kingdom by the forces of an evil sorcerer known as Ganon, Hyrule's young matriarch Zelda had the Triforce of Wisdom split into eight fragments, to be hidden across the realm for safekeeping. As Hyrule was attacked, Ganon's forces were able to procure the Triforce of Power, which has only corrupted Ganon and has made him stronger than ever before. It is during this attack that Princess Zelda secretly sent out her most trustworthy nursemaid Impa on her own mission; to find a hero capable of saving Hyrule. Upon hearing of this, Ganon imprisoned Zelda, and had a group of mercenaries pursue the old woman.
After nearly being ambushed by Ganon's mercenaries, Impa was rescued by a young adventurer by the name of Link. Though very young, younger than the princess even, Impa was taken aback by the boy's courage and valor; her search for Hyrule's hero was over.