The Legend of Zelda: Ocarina of Time
In the Kokiri Forest, the Great Deku Tree asks the fairy Navi to tell Link to come to him. When Link arrives, he learns that the Great Deku Tree is dying because of a curse placed on him by an evil man called Ganondorf. Link is the only one who can save him. Link must enter the Great Deku Tree in order to save him from the curse.