Author: Stormforce
Rating: NC-17
Disclaimer: Don't own either series.

After leaving Ursula's lair the group followed Ariel deeper into the caves, and into another large room, covered with the marks of the Heartless. A heart cut into three parts, darkness covered the paintings all over the walls.

Since Tara was nothing more than a white mage, she could feel the darkness in the room, and wanted to get out fast. Even the others could feel the darkness, especially Willow, seeing as she was a gray mage and delt with both black and white magics.

Faith glanced over the paintings and saw a patteren, each painting was over a different world, and judging by the looks of it, it was the worlds the Heartless had destroyed. Faith had to wonder if this was all of them, or just a few, she hoped it was all of them.

Buffy must have made the same connection as she did, seeing as her shoulders slumped, and her head hung low. Faith placed her hand on Buffy's shoulder and smiled. "Don't worry, once this is over, these worlds will go back to normal."

"I know...it's just...awful to think about."

Willow ran her hand over one of the paintings, and quickly pulled her hand back as if she'd been shocked. Tara watched, and wondered what had happened, and saw Willow touch the painting again.

"Will? What is it?"

Willow pulled her hand back, and turned toward the group with wide eyes, "I don't know what you guys were thinking about these, but I was thinking it was the worlds that'd already been destroyed." She looked back at the painting she was in front of and sighed. "They're not. These are worlds the Heartless plan on taking over."

"How do you know that?" Donald asked suspiciously.

Willow turned and saw the worried look on his face, "Don't worry, I'm me. How I know is...is because this painting is of...Spira."

"What?!" Faith and Buffy shouted in unison as Tara felt weak. "The Heartless is going after our world?" Faith asked.

"When? Wills, do you know when?" Buffy asked franticly.

"No, I can feel Spira's life force...and know the Heartless will destroy it if we don't stop them, or seal the keyhole."

"For now, Spira is safe." Tara firmly nodded getting confused looks from everyone, but Willow, she only nodded in agreement.

"How do you know?" Goofy asked swimming over.

"Simple." Tara smiled. "My mother, the Fayth, Sir Giles, Sir Ira, Willow's mother, any of them would appear to us in our dreams, and tell us if Spira was in danger."

"That's right, I forgot they help us." Buffy giggled.

"Okay, since we know Spira's fine...for now, all we gotta worry about is this witch, and the Heartless."

Ariel and Sebastian joined the group and motioned for them to follow. "This is the only way." Ariel said as she led the group to an opening. "The water here moves fast, and it's hard to swim through, but like I said: it's the only way."

"That's fine, let's go." Willow said and swam into the speeding water, and was pushed backwards. She began moving her tail faster and soon was swimming against the flow, and moving forward, slowly, but surely. It took the group almost an hour to reach the open area Ursula was at, and by that time they were tired, but knew they had to get Triton's trident back.

"You pathetic fools! I rule the sea now!" Ursula laughed and the group could only watch as the witch grew bigger and bigger. "The sea and all its spoils bow to my power!"

"I don't think so!" Willow shouted swimming forward, unsheathing her blade with Buffy at her side.

Tara cast a Holy spell and dodged one of the many bolts of lightning Ursula was causing with the trident. Faith glowed for a moment before letting a Thundaga spell fly, just as Donald's Firaga spell hit the giant octopus-woman. Buffy swung her blade around hitting Ursula's face, and backed up when Ursula bit at her. She tried to eat me!

Goofy spun into the sea witch's stomach, and was knocked back by one of her tentacles, he shook his head to clear it, and spun forward again. Willow had swam to the back of the giant woman, and hit the back of her head with the Keyblade, and let a Flare spell fly.

Ursula screamed as the spell exploded around her head and turned to snap at Willow. Seeing this, Buffy cast her own Blizzaga spell, freezing Ursula's arm, and causing her to turn her attention back to Buffy.

Willow noticed a difference in the witch, and hurriedly swam around, grabbing Buffy and swimming toward the others. Ursula opened her mouth and began taking a long deep breath, sucking in everything in front of her, Willow fought against the current and pulled out of range with Buffy's help. She stopped beside Tara and turned, narrowly missing Ursula's trident attack.

Five different colored glows lit up the area, Tara glowed white and was soon joined by Willow's blue, Faith's dark blue, Buffy's orange, and Donald's green, Goofy, Ariel, and Sebastian backed up as the glow got brighter. Tara took Willow's hand, who in return took Faith's as Buffy took Faith's, she reached over and took Donald's. The glow's mixed and swirled in front of the four young women, and one duck.

No words were said, none needed to be said, as the energy shot forward and wrapped around Ursula, and began shrinking. The sea witch fought against the enclosing energy and screamed as it exploded and disappeared, taking her with it. The trident fell to the ocean floor as the girls and Donald slumped forward, weakened from the energy drain.

"Don't wanna do that again for a while." Buffy chuckled wrapping her arms around Faith, trying to support herself and her lover.

"I'll agree to that." Tara said laying her head on Willow's shoulder.

Ariel swam down and picked up the trident with a relieved smile. "Now to get this back to daddy."

"Yes." Sebastian agreed, and watched the others follow them at a slow pace.

Once the worn-out group got back to the palace, they glanced around hoping their twins were no where to be seen. Xander, Anya, Flounder, and Giles, met the group at the entrance of the throne room, and laughed at the looks that crossed the girls' face when the heard screams of pleasure from both Tara's twin calling Willow's name, and Faith's twin calling Buffy's.

"Don't worry, if you stick around for a while, you'll get used to it...or you'll be screaming along with 'em." Xander smirked as the girls hurried past him and into the throne room.

"Daddy, I'm so sorry." Ariel apologized handing the trident to Triton.

"Please don't be angry with her." Willow spoke as she bowed to the king.

Triton shook his head, "It's my fault." he said to the group and turned to Ariel, "You followed Ursula because...I wouldn't let you follow your heart. And when you found that crystal trident, I lost my temper and destroyed it."

"Oh, yeah,! Why did you destroy it?" Goofy asked swimming up to Triton.

"That crystal held the power to reveal the Keyhole. The Keyhole is dangerous, and I had to keep you away from it at any cost."

"Daddy... don't worry. I should have listened, but I didn't."

Triton leaned down and left a kiss on the top of Ariel's head. "I love you daughter." he smiled and looked at Willow. "As the key bearers, I have a request: Seal the Keyhole. My trident also hold the power to reveal the Keyhole. Will you do it?"

"Of course." Buffy grinned.

"That's what we had in mind from the start." Tara bowed.

"Daddy, where is the Keyhole?"

Triton chuckled, "You should know better than anyone, it's in your grotto."

"Really? Come on, let's go." Donald said and swam outside.

At Ariel's Grotto...

Once inside Triton raised the trident and shot a beam at the trident slot, revealing the Keyhole. Willow's Keyblade rose into the air, and shot out its red beam sealing the heart of the world, as a piece of paper appeared in Tara's hands.

Triton and Ariel escorted the group to where they had appeared, "Tell me, Buffy, what is your world like?"

"I'm sorry about that...you know, lying to you and all."

"It's okay." Ariel smiled and hugged Buffy, "Besides, if you can travel to other worlds, maybe I can, too, someday."

"I'm sure you will." Buffy smiled and watched the mermaid hug the others.

"So many places I want to see... I know I'll get there someday. I promise I'll find a way somehow, I'm sure of it."

"Well, if you find it, do me a favor and leave me out of it!" Sebastian said from Triton's shoulder.

The group bowed to the king, "It was an honor meeting you, King of the Seas." Faith said straightening up.

"We'd better get going." Donald said and disappeared with Goofy.

"Tell our twins we're sorry for, umm...not, uh, sticking around." Willow blushed thinking about the twins and was very glad they'd been too busy to see them off. No telling what they would've done! she thought as she and the others teleported back to the ship.