"Okay guys. Prepare for landing." Donald says as the group prepares to land on the new world.
"Uh..." Alexis says as she and Amaya look out the window.
"Land where? In the sea? We'll drown!" Sora shouts in fear.
"Not with my magic we won't. Just leave it to me." Donald says as the group then lands and appears in a cove with new bodies.
"Whoa. This is a new feeling huh girl?" Alexis asks as she sees she's a mermaid while Amaya is a dolphin before the group hear screaming and see a red crab, a fish, and a mermaid with red hair.
"Relax Sebastian. They don't look like one of them. Right Flounder?" The mermaid asks as she looks at the fish.
"I don't know. There's something weird about them." Flounder says.
"What do you mean?" Alexis asks.
"They do seem... a little different. Where are you from?" The mermaid asks.
"We're from kind of far away. And we're not really used to these waters." Sora says nervously.
"Oh, I see. In that case... Sebastian can show you how we swim around here." The mermaid says.
"Ariel! King Triton will not like this!" Sebastian says angrily.
"Oh don't worry." Ariel says unworriedly.
"Easy for you to say... Okay it's time you learn how to swim properly." Sebastian says as he begins showing the group how to swim.
"Sebastian!" Ariel shouts as heartless begin heading toward the group.
"Class is over. Good luck!" Sebastian shouts as he, Flounder, and Ariel hide as the group quickly fights and defeats the heartless.
"Those creatures chased us here." Ariel says as she, Sebastian, and Flounder come over once seeing it is safe.
"Oh no! Those monsters might be heading for the palace too!" Sebastian shouts in worry.
"We'd better head back right away!" Ariel shouts worriedly.
"But wh-what if we run into more on our way back?" Flounder asks fearfully.
"I'm sorry but we need your help. Please come to the palace with us." Ariel says as she looks at the group.
"If you need our help we'll come. That's not a problem." Alexis says as she smiles.
"Yeah." Sora says before the group leaves.
*Timeskip*
"That was too close. As long as I have my trident I will not tolerate those creatures inside this palace." A man says as he defeats some heartless as the group swims up.
"Daddy!" Ariel shouts as she swims over to the man.
"Oh Ariel! When will you listen? It's dangerous out there! Strange creatures lurk outside." The man says sternly as Ariel gives a guilty look.
"Behold. You swim before the ruler of the seas. His Majesty King Triton." Sebastian says as Triton notices the group.
"And who are they?" Triton asks.
"They helped us fight off those creatures." Ariel says.
"They don't look familiar." Triton says as he looks at the group.
"We're from an ocean very far away." Alexis asks.
"Yup. We came to find the Keyhole." Goofy says.
"The what?" Trition asks stunned.
"What's that?" Ariel asks curiously.
"A-hyuck! Well it's a-" Goofy then gets cut off by Triton.
"There's no such thing! Certainly not here!" Triton shouts angrily.
"But Daddy-" Ariel then gets cut off by Triton.
"Ariel not another word! You are not to leave the palace. Is that clear?" Triton asks before Ariel gives a hurt look and swims off with group following her.
*Timeskip*
"Look at all the wonderful things Flounder and I've collected. I think it's all from the outside world. Someday I'm going to see what's out there. I want to see other worlds. Does that sound strange?" Ariel asks as the group follows her inside a grove filled with human things.
"Not at all. I travel because it was mine and my mother's dream but now it's more so mine." Alexis says as Ariel looks at her curiously.
"Why isn't it your mother's dream anymore?" Ariel asks as Alexis gives a sad look.
"Well... I lost her when I was young. She never got to see the world and all its beauty. So now I do that for her while I'm looking for someone I lost." Alexis says.
"I'm sorry. I know how you feel. I lost my mother as well. I hope you find your friend too. Hey why don't we try looking for that Keyhole you were talking about?" Ariel asks.
"But your father said-" Sora then gets cut off by Ariel.
"Oh he treats me like a little girl. He never wants to let me do anything. He just... He just doesn't understand. Let's just get to looking for that keyhole thing." Ariel says as the group swims out of the grove and begins to look for the keyhole and soon find a crystal trident in doing so before beginning to return back.
*Timeskip*
"That looks beautiful Ariel." Alexis says as Ariel is putting the crystal trident in a rocky sculpture in the cove wall.
"Ariel, you've disobeyed me again! I told you not to leave the palace!" An angry voice shouts as the group sees Triton before he sees the crystal and points his trident at it.
"Daddy, no! How could you..." Ariel says in disbelieve as Triton destroys the crystal before she swims off.
"Young man you're not from another ocean. You're from another world. Aren't you?" Triton asks as he looks at Sora.
"Huh?" Sora asks.
"Then you must be the key bearer." Triton says.
"How did you know?" Alexis asks as Triton looks at her.
"You may fool Ariel but you can't fool me. You don't know your dorsal fin from your tail. As the key bearer you must already know... One must not meddle in the affairs of other worlds." Triton says.
"Of course I know that but-" Sora then gets cut off by Triton.
"You have violated this principle. The key bearer shatters peace and brings ruin." Triton says harshly.
"Aw Sora's not like that." Goofy says.
"I thank you for saving my daughter. But there is no room in my ocean for you or your key." Triton says as he leaves before Sora looks at his keyblade.
*Timeskip*
As the group swims back into the palace they see a woman holding the trident with some eels floating around Ariel and Triton.
"Why we have company. I'm afraid you're a little late handsome!" The woman says.
"Daddy!" Ariel shouts as the woman leaves in a cloud of ink before Ariel looks at her weak father.
"The trident... We must get it back." Triton says weakly.
"Come on. Let's go!" Sora says as the group turns to leave.
"Wait I'm going with you! My father is hurt and it's all my fault. I have to stop Ursula!" Ariel says as Sora nods and Alexis smiles.
"That's right. I'm right behind you Ariel." Sebastian says before the group leaves.
*Timeskip*
As the group arrive in Ursula's liar she comes out scowling.
"Come out! You can't run!" Donald shouts.
"Your time has come!" Sebastian shouts as the group begin fighting with Ursula before eventually beating her as her two eels get disintegrated from the magic.
"No... Impossible! You'll pay for this!" Ursula shouts as she swims away in a fury.
"Let's go. We must get the trident back." Ariel says as the group leaves and quickly catches up to Ursula in the open sea.
"You pathetic fools! I rule the seas now! The sea and all its spoils bow to my power!" Ursula shouts as she grows to a huge size before the group begins fighting with her again. the group then soon defeats her before retrieving the trident.
*Timeskip*
"Daddy I'm so sorry." Ariel says as the group returns to the throne room.
"Please don't be angry with her." Alexis says.
"It's my fault. You followed Ursula because... I wouldn't let you follow your heart. And when you found that crystal I lost my temper and destroyed it." Triton says as he looks at Ariel.
"Oh yeah. The crystal! Why did you destroy it?" Goofy asks.
"The crystal held the power to reveal the Keyhole. The Keyhole is dangerous. I had to keep you away from it at any cost." Triton says.
"Daddy..." Ariel says as she looks at Triton.
"Key bearer I have one more request. Seal the Keyhole. My trident also holds the power to reveal the Keyhole. Will you do it?" Triton asks as he looks at Sora.
"Of course. That's what we had in mind from the start." Sora says as he smiles.
"Where is the Keyhole Daddy?" Ariel asks.
"You should know better than anyone. It's in your grotto." Triton says.
"Really... Sora let's go." Alexis says.
*Timeskip*
"Tell me Sora. Your world what's it like?" Ariel asks as the group is in her grotto.
"Oh about that... Sorry for lying to you." Sora says guiltily.
"It's okay. Besides if you can travel to other worlds maybe I can too. So many places I want to see... I know I'll get there someday. I'll find a way somehow. I'm sure of it." Ariel says with hope.
"Well if you find it do me a favor and leave me out of it." Sebastian says as Alexis chuckles.
"This is from my collection. I want you to have it." Ariel says as she gives Sora a keychain.