Link and Alel stood around in the Black Vine Dungeon, confused on what to do next.
"This Temple...its nothing but moving black and white vines...what...should we do?"
Link responded by turning into his Divine Beast: Twilight Wolf form and by using his senses, he moved forward. He knew exactly on where to go and what to do.
Wolf Link and Alel traveled through the dungeon for some time but as they traveled deeper and deeper within the dungeon they noticed something peculiar... the dungeon was completely empty...there were absolutely no monsters...
As Wolf Link and Alel moved further through the dungeon, they started to hear a sound as if was cackling but it was soft. Wolf Link and Alel decided to follow the sound and it began to get louder and louder. Eventually the reached a large, spaced-out area. In the center of the room was a hole. All the vines on the floor of the room were all moving towards that hole. Suddenly, Wolf Link and Alel instantly became entrapped by the surrounding vines and were being pulled near the whole and were then pulled into the hole.
Wolf Link and Alel woke up to find themselves in a large arena made out of the vines and large tree-like pillars scattered around the arena. In the center of the arena they suddenly saw something odd. A large stream of what seemed to be white fire appeared and began to fly around, igniting the pillars around the arena. At the same time, another large stream appeared. This stream appeared to be ice, but it was black. The stream of black ice flew around freezing the blazing pillars. The 2 streams began to fly around each other and soon Wolf Link and Alel then heard a loud, feminine voice.
"With my white fire, I shall burn you to your bone!"
"With my black ice, I shall freeze you to your soul!"
Soon the 2 streams formed a glowing double helix and the helix glowed brighter and soon a black and white woman with black and white flaming hair holding two large black and white wands of white fire and black ice appeared.
Wolf Link quickly transformed back to his Hylian form and drew his Four Sword and Master Sword as Alel yelled:
"Twilight Witch: Twinrova!"
With just a loud cackle Twinrova's eyes glowed black in one eye and white in the other and attacked Link and Alel by firing a blast of white fire. Without a shield to defend, Link hesitated but then reacted by blocking the blast of fire with his 2 crossed swords and swung the blast of fire away, hitting a frozen pillar. Without a way to combat Twinrova, all Link could think of was to keeping dodging the witch and deflecting her black ice and white fire blasts. As the fight continued, the arena was being frozen and ignited constantly making the vines of the arena erode.
But soon as Link continued to deflect the blasts, he began to notice that both his Master Sword and Four Sword were glowing black and white.
"Link! Your swords are glowing! It seems as if their absorbing Twinrova's power, maybe you can use her power against her..."
That was when Link got the idea. He jumped towards Twinrova and the witch fired 2 blasts of white fire and black ice. He blocked the blasts with his swords and instead of deflecting the blasts, he stood his ground and the swords fully absorbed the fire and ice.
Link felt the power coursing through to 2 swords and he then leaped forward towards Twinrova, taking advantage of the Twilight Witch's confusion and surprise Link spun around in the air unleashing huge crescent-shaped waves of white fire and black ice.
The blast wave instantly flash froze and incinerated Twinrova injuring her severely. She fell to the ground hard; her body halfway covered in black ice and white fire and in constant pain.
"You...won't...succeed. My master...will become one with you...and destroy this...world"
Twinrova said as she breathed her last breath. Link filled with rage then impaled the witch with both of his swords and with a loud scream, the Twilight Witch exploded in a flash of black light.
The black light then revealed a large, naked green-haired women, same as before.
The women opened her eyes and Link and Alel were then surrounded by a ring of light and disappeared. They then reappeared in the Faron Spirit Spring.
"Hero Chosen by the Gods, I thank you for releasing me."
"As you already know of the plight currently happening, you must find the remaining Spirit Springs and heal the Light Spirits and save the remaining Great Fairies that we might help break the seal of darkness over Hyrule and defeat your evil self."