For centuries, it was Princess Zelda and Link's predetermined destiny to save the land of Hyrule, before it fell into chaos and darkness from the Evil Ganondorf.
Countless new breeds of enemies were created to stop link from ruining his treacherous plans. Darknuts, moblins, bokoblins, stalfos, and many more. Despite the numerous attempts, Link pressed on, destroying the enemies to attain his goal. Saving princess Zelda.
To test link's might, and to also try and murder him, Ganon has created his phantom. A replica of himself, but far weaker than the original. Of course, link blasted through it no problem. With that knowledge in mind, he created a new enemy. Another phantom.
This time, it's Zelda's phantom. He was capable of creating this new phantom while he had Zelda in his grasp.
Her mission is to stop link, and put an end to him.