I think merging the plots of OoT and A Link To The Past might be the best way to go.
Opening: Hyrulean Civil War, a narrator takes us through scenes of an epic war, we are introduced to a woman who has a young child (a boy). The woman is gravely injured and rides on horseback to escape chasing marauders into the woods. She barely makes it to the forest sanctuary of Kokiri, where she entrusts the child to one of the locals, who will raise him as his uncle.
Meanwhile we are introduced to the inner workings of the Hyrule monarchy and its young princess Zelda (daughter to the King/Queen). Zelda has a bodyguard named Impa. A wizard named Agahnim appears and gradually gains more power in the Hyrule political structure. We don't know that he is actually Ganondorf reincarnated, this will be revealed as the series continues on.
The child Link grows to age 13 or so and lives in the wooded world of Kokiri raised by his "Uncle" (who's actually more like Ranger/Strider type character), befriending Sara, with a sense of wonder, always wanting to explore (and often getting in trouble for it). Particularly Link doesn't understand why he can't leave the confines of the forest. He has many adventures, we come to learn Hyrule is a magical place full of wondrous forests, caverns, temples, etc. We learn also about the prophecy of a "Hero of Time".
Link's Uncle fears that something dark and sinister is making its way through Hyrule, evil seems to be gaining power, perhaps even the royal family itself may be infiltrated by it. Some time passes, however one dark and rainy night the castle comes under full assault by evil forces. Link's Uncle sets off to help, he commands Link to stay home.
However, Link has a vision of Zelda and is guided to Hyrule by a fairy named Navi. He sneaks into the castle using underground passageways and finds his Uncle almost dead. With his dying wish he gives Link his sword, they go and save Zelda just before she's killed by Angaheim and they escape through the underground tunnels into the wilderness, but now evil has taken over.
The first season could end with Link entering the Temple of Time and taking the Master Sword after Agahnim kills Saria (Link's closest friend/love interest). Season 2 begins seven years later ... seven years have passed and the world has changed, Link is now grown.







