The Legend of Zelda: Ocarina of Time was the first Zelda game to feature 3-dimensional graphics and controls. It came out in 1999, and is still widely considered by many as one of, if not the greatest game of all time.
Link, a young child living in the Kokiri Forest, is summoned by the Great Deku Tree. The tree tells him of a dangerous tide falling over Hyrule and asks Link to rid him of a curse cast upon him by an evil man. Link's quest is to rid Hyrule of the evil which it faces and restore peace.