by Fi to the Sealed Temple, where he meets an old woman who tells him to track Zelda: this leads Link across the regions of Faron Woods, Eldin Volcano, and the Lanayru Desert. While he catches up with Zelda, he is prevented from returning her to Skyloft by Impa, a young woman guarding and guiding Zelda. Link also encounters Ghirahim, a self-proclaimed Demon Lord working towards freeing Demise. At the Temple of Time in the Lanayru Desert, Link defends Zelda and Impa from Ghirahim, buying the two enough time to depart through a Gate of Time into the past, which Impa destroys as they pass through. Returning to the Sealed Temple, Link is followed by Groose and the two end up on the surface together. Link then has to defeat the Imprisoned, a monstrous form of Demise attempting to reach the Sealed Temple, after the old woman shows him a second, albeit dormant, Gate of Time. With the Imprisoned defeated, Link sets out to strengthen the Goddess Sword by passing trials set by the ancient Goddesses and using their gifts to find Sacred Flames to purify and strengthen the blade so the Time Gate can be awakened. Returning to find the Imprisoned attempting to break free, Link reseals it with help from Groose. Activating the Gate of Time and traveling to the past, he finds Zelda and learns that she is the mortal reincarnation of Hylia; Hylia could not kill Demise and was too weakened from their battle to fend him off again, so she created the Goddess Sword and reincarnated as a mortal to find someone who would fulfill her duty by using the Triforce to wish Demise's destruction, as only mortals can use the artifact. Zelda then seals herself inside a crystal to strengthen Demise's seal, granting her power to the Goddess Sword and upgrading it into the Master Sword. Link locates the Triforce on Skyloft and uses it to destroy Demise. With Demise dead, Zelda is freed, but Ghirahim arrives and kidnaps Zelda: though Demise is dead in the present, Ghirahim intends to use Zelda as a sacrifice to resurrect him in the past. Link pursues Ghirahim into the past and fights through his army. He then defeats Ghirahim, who turns out to be the spirit of Demise's sword but is unable to prevent Zelda from being used to reincarnate Demise's humanoid form. Groose guards Zelda's body