Hey everyone! Here's another chapter during the Atlantica saga! Enjoy!

Disclaimer: I don't own any of the Kingdom Hearts characters or games. I also don't own Stitch or Pikachu. They belong to their respective owners. Matt is my OC.

The rest of the night went smoothly at the castle. To Matt's great relief, no more Heartless invaded and no one else was hurt.

When morning came, Matt and his friends regrouped with Ariel to discuss a plan.

"I just know that Morgana is behind this," Ariel said. "She just has to be. Who else would want to hurt us?"

"Well, what should we do?" Pikachu asked. "If she's the reason behind this mess, then we need to stop her."

"I agree," Matt nodded along with Stitch. "The problem is, we have no idea where to look."

"Hmm…," Ariel said while rubbing her chin. "Maybe my father would have some idea. I still haven't informed him of the danger yet."

"Sounds good to us," Matt replied.

Suddenly, Eric sprinted up to the trio and panted from exhaustion. "Ariel…it's Melody. She's gone!"

"What?" Ariel gapsed. "What do you mean she's gone?"

"She wasn't in her room, and it looks like she snuck out through the window."

"Where could she have possibly gone?" Matt asked.

"I'm not exactly sure but…," Eric looked worringly at Ariel. "One of the boats is missing…"

Ariel gasped and covered her mouth. "Oh no…she's out on the sea…all alone.." The red head burst into tears and covered her eyes. "It's all my fault…it must have been because of our fight."

Eric took his wife in and comforted. "It's alright, Ariel. We're going to find her before you know it."

Ariel then gasped again. "Oh no…I forgot that there are Heartless out there too. What if she gets hurt? I'll…I'll never forgive myself!"

Matt, Stitch, and Pikachu exchanged worried looks. Things were getting bad and fast. "That won't happen," Matt said stepping forward. "Ariel, we'll help you look for Melody if you let us."

Ariel sniffed. "You…you will?"

Stitch and Pikachu gave firm nods. "Count on it," Matt replied.

Ariel wiped her eyes and recomposed herself. "Thank you," Eric said. "Melody means everything to us."

"That's right," Ariel added. "C'mon, we've got to hurry! My father should be able to help us."

Melody had been rowing for about an hour before she'd stopped for the night, but not before some strange looking monsters with black hearts on their chests had capsized her for good. She screamed as she was sent into the blue before she hit her head on the boat…

The next thing Melody knew, she'd awoken in some sort of strange cave.

"Where…where am I?" she asked herself.

"Fear not, my child," a voice said from behind. Melody whirled around and saw what looked like a strange old woman sitting there. "You are safe here."

"Who are you?" Melody asked.

"You may call me Morgana, dear," the old woman replied. "Don't be shy, I come in peace. Would you like to sit down?"

Melody cautiously accepted the offer and did just that. She spoke with this Morgana for a few minutes about the little things, slowly feeling more comfortable with her. Morgana asked why she was out on the ocean all alone, to which she told her story…which included the fight with her mother.

"I just wish I knew what she was hiding from me," Melody said while holding the locket. She opened it and saw the underwater city again.

Morgana grinned. She explained to Melody how this city was a real one, the great city of Atlantica to be specific. It was the one of the most glorius cities in all the seven seas, where the merpeople resided.

"Wow…," Melody said. "I wish I could go there."

Morgana laughed. "Your wish is my command." She reached for a strange bottle on one of the shelves. With it, she poured a single drop onto Melody's legs. In a flash of light, they fused together to form a red mermaid tail. The girl gasped out loud and dove into the water.

"Wow…," Melody said. "I don't believe this! Thank you!" She continued to test out her new tail for several minutes.

Morgana sighed. "It's my pleasure dear…but alas it's only temporary. I don't have the power to turn you into a mermaid forever…or at least I don't have it anymore."

"What?" Melody asked, swimming to the edge. "What do you mean?"

Morgana then explained how an old, mean king had stolen her 'trident', and that without it she couldn't keep Melody like this forever. She also claimed that she couldn't set foot in Atlantica, where the trident was being held.

Melody decided to take a chance. "Well…I could get it for you."

"You would dear?"

"Sure, then I can stay this way for good."

"Oh, thank you my child! I promise you won't regret it."

With that, Melody dived back into the sea once more on her way with a map to Atlantica. When she was gone, Morgana laughed wickedly to herself.

"Worked like a charm," she said. "Everything is going according to plan. Not only will she do my work for me, but poor Ariel will try and save her. When she does, the Heartless will take her heart and assist me when I rule the seas!"

Morgana then waved her arm and summoned what looked like Heartless sharks. "Go forth…make sure the girl gets the trident. Destroy all that gets in your way!" The Heartless nodded and dove back in, following their target.

The next thing Matt and his friends knew, they were standing on the deck of one of Eric's ships (Stitch had taken to hiding on Matt's head some more, which was the only way he'd get on the ship in the first place).

Within minutes, Ariel's father soon arrived…King Triton himself.

"Ariel," he said. "What's happened? And who are these three?"

"Oh, this is Matt," Ariel replied. "He has a Keyblade too." The teen waved weakly before the ruler of the seas.

King Triton frowned. "I should've known…that would explain some of the Heartless that have been in Atlantica lately."

"Now, Daddy," Ariel spoke up. "Matt and his friends have done nothing but help us, so please don't be so mean."

King Triton sighed. "I suppose you're right."

Ariel and Eric then explained the rest of the situation to the great King, who growled in frustration.

"Blast it," he yelled out. "I'll get my best mermen to begin searching the seas immediately. If that blasted Morgana is behind this, I'll be sure to make her regret ever attempting to do harm to my family."

"Speaking of which," Matt spoke up. "Do you know where we can find her?"

"I'm afraid not, young man. Morgana disappeared some time ago. Still, finding Melody is the top priority. I'll make sure to that."

"Daddy," Ariel spoke up. "I want to help search too…if you'll let me."

"I don't know…I don't want to risk losing you as well."

"She's my daughter, and I'm not just going to sit here and do nothing. Please Daddy…"

Triton sighed. "Very well…but you do know what I must do right?"

Ariel nodded. "I understand."

Eric went up to her. "Are you sure about this?"

"Yes, Eric. I know this ocean as well as anyone. I'll be fine."

Matt sighed. He knew what he had to do. "I'll go too." Everyone looked his way. "If there are any Heartless down there, you may need my help." He turned to King Triton. "Is that alright your Highness?"

The ruler of the seas sighed and nodded. "As much as I feel uncomfortable about it, I suppose it wouldn't hurt to have a Keyblade bearer help…especially if it means finding my granddaughter sooner."

Matt nodded firmly. "Right."

"What about us, Matt?" Pikachu asked. "Can we go too?"

Matt sighed. He grabbed Stitch and put him down gently. "I don't know guys…"

"Why not, Matt?" Ariel asked. "Daddy can help them too."

"Well…," Matt began. "Stitch really doesn't like the water…so it'd be too much to ask him to go under there." The little alien shuddered at the thought. "And Pikachu, your electric attacks don't really mix well with the water either. I'd rather not risk you accidently hurting one of us."

Pikachu drooped his ears. "Oh…right."

Matt got on his knees. "It's gonna be fine, guys. You two need to stay up here and protect the castle. I'll be back before you know it."

Both Stitch and Pikachu sighed before they nodded. "Ok," Stitch said. "Wesa help here."

"Right," Pikachu added. "Just be careful down there, Matt."

"I will," Matt replied. I hope…

King Triton then cleared his throat. "Alright then, if you two are ready…"

Matt followed Ariel while getting on to the side of the ship. He took a long look at this friends before turning back and nodding. The teen then closed his eyes.

"Alright then, prepare yourselves!" The sea king raised his trident and shot a beam of energy at the two, encasing them in a gold light.

Matt felt a funny feeling shoot through his entire body as his legs seem to mold together before him. He heard a splash to his left before he started to lose his balance.

"Whoa…whoa…whoooooooaaaa!" Matt yelled as he fell face first into the cold waters. The teen shook his head under the water before using his arms to pull himself to the surface.

"Matt!" Stitch and Pikachu yelled. "Are you OK?"

"Oh my head…," Matt replied. He looked over and saw that Ariel had been transformed back into a mermaid…which meant one thing. The teen put his head under the water and stared wide eyed at his own new form. It looked mostly like Sora's transformation which resembled a blue dolphin tail. Matt also noticed he was wearing a sleeveless white shirt instead of his regular one.

"Whoa…," Matt said. He then gasped and realized he was breathing under the water. He thought it would be more complicated, but it honestly felt the same as being on land. It took him a little bit to get used to before he resurfaced again.

"Pretty cool huh?" Ariel asked.

"Yeah," Matt said. "This is definitely going to take some getting used to."

"Well come on, we've got to get going."

Matt turned back and told his friends goodbye for now before diving in as well. Unfortunately, he found he was having a lot of trouble moving this new tail through the water though he could breathe now. For some reason, he just couldn't get it to move like he wanted to.

"Does there seem to be a problem?" King Triton asked with an annoyed look.

"No…argh…maybe…," Matt replied. The teen kept moving as best he could before he found himself floating tail up. Matt growled in frustration.

Ariel sighed and turned to her father. "It didn't take Sora this long to get used to swimming. I wonder what's wrong."

King Triton shook his head. "I don't know, but we don't have time to wait for him to get accustomed. We need to find Melody as soon as possible."

"Well…," Ariel said. "Maybe I could go look around my old hangouts…and you could send someone with Matt to look elsewhere while he keeps practicing."

King Triton rubbed his chin before an idea came to mind. "I think I have just the right one in mind." He whispered in Ariel's ear his idea, causing her eyes to widen.

"Really?" Ariel asked. "Are you sure he wouldn't mind helping us?"

"This is a special case, Ariel." He raised his trident and it glowed brightly.

"Huh?" Matt asked when he righted himself back up. He looked over to see a shape taking form in the water next to the King and his daughter. "What's happening?"

"Daddy's summoning someone to help you out," Ariel replied.

"Really? But who?" Matt asked. When the shape finally took complete form, the teen gasped at who (and what) it actually was.

Is that a…?

Don't you just hate when i give you cliffangers? Who exactly is coming to our heores' aid? Can they stop Morgana's plan in time? Find out next chapter!

Peace out,

Biz

P.S. Good luck guessing this one...;)