Me and my brothers came up with a treatment that we liked for a Zelda movie, and it would be loosely based on Ocarina of Time. I say loosely because the story would be quite different, it would bring in elements from other games in the series, and it would also not have any time travel. Here's the basic premise.
-----------------------------------------
The 10 year old Princess Zelda shares a special friendship with a peasant boy named Link, who lives outside of the castle walls. They seldom see eachother due to royal customs, but they still share a close bond none-the-less. They aren't entirely sure why, but they believe that they are somehow connected after they discovered they share a similar birthmark-- it's a variation of the triforce symbol, but their marks are on opposite hands and in reverse from eachother. Nether knows what they mean, but Zelda had been told to keep hers a secret-- but when she saw Link's, she had to share it with him.
One night however, the evil prince of the western desert lands, Ganondorf, with his band of thieves infiltrates Hyrule castle and takes over, slaying the king and all those who get in there way. On this same night, Link has snuck inside to see the Princess, and fearing for her safety he tries to find her. However, she has already dissapeared, a long with her caretaker Impa. Link gets caught by Ganondorf, and despite his scrappy spirit, gets whooped to the floor. Before Ganon can kill him however, his hand is stayed by his second-in-command and lover, the beautiful Narybu. She appears take pity on the boy and convinces Ganon to let him live, and when he sees the mark on the boy's hand, he agrees not to kill him... And instead, sends him to a dungeon to rot.
We cut ahead seven years, and we find a bearded, dirty looking young adult Link, in the wet and foul-smelling stone dungeons of Hyrule. He's been noticeably toughened up by these living conditions, and he needs it since he seems to constantly get into fights with the other prisoners-- and although he doesn't seem to start most of them, he always finishes them. One night though, he can feel an intense heat on his hand. His birthmark feels almost like it's burning! He examines his pathetic existance, and decides that he can't hide behind stone walls waiting for death any longer. He hatches a plan for escape, utilizing the mechanism that the guards use to feed the prisoners. He gets ahold of a sword and fights his way out, and thinks he's finally free...
Until he sees how the world has changed in the seven years he was gone. Ganondorf is now the merciless king of Hyrule, and the people are opressed and without hope. He learns from a wise elder that the source of Ganon's power cannot be defeated by mortal strength alone, and that Hyrule's only hope lies within the blade of the Master Sword. Link vows that he will find the sword and overthrow Ganon, and put the rightful heir on the throne. To find the sword he must face great perils, and join forces with three other enemies of Ganondorf... The mighty Goron cheftan Darunia, the fair Zora maiden Ruto, and the mysterious shadow warrior Shiek-- who comes from an order devoted to Hyrule's royal family.
Will Link find the master sword, destroy ganon, save the princess, and free his people? Duh.
-----------------------------------------
Yay, that's my plot idea, at least. ^_^