Yo peeps ! How are you? It's Disney's Miraculous Heart here with my very first story and I'm super duper excited! As the title recomends this is the story of the little mermaid but with miraculous ladybug characters. I decided to write this story because I've seen a lot of The Little Mermaid AU and it really inspired me. Am I forgetting something? Ah yes I don't own Miraculous Ladybug or The little mermaid or the quote from the 'Origins part 2' episode.

Chapter 1

Many strange stories are said about far off places. But this story is unlike any other, because this story begins under the sea. In the underwater kingdom of Atlantica, where merpeople reside, a great celebration in honor of prince Adrien was about to begin at king Gabriel's shiny castle.

As everyone was entering the amphitheater, a small dark red crab named Nathalie was swimming back and forth, at the royal balcony, worried. "What's taking him so long?" she wondered, and went to the prince's bedroom.

When she arrived, she found out that no one was there, and the king wouldn't be pleased to hear it.

"What do you mean he's gone?! If anything has happened to my son you'll be responsible!" he yelled at her enraged and his trident glowed, implying his anger.

"Umm…Please your majesty…he … he can't have gone too far…" Nathalie stuttered trying to calm the king down.

"WHERE IS ADRIEEEEEEEEEEEEN?!" he shouted.

Meanwhile, pretty far away from the city, the fourteen year old prince Adrien was swimming towards an area where many sunken ships could be found. He had blond hair, green eyes and green tail, and he had a blue bag with him, to put in all the human stuff he had found at the shipwrecks. Since he could remember he was amazed by the human world and he loved exploring the sunken ships and collecting human stuff.

One day he had found a white ring in a shipwreck, but it wasn't just any ring. It was a miraculous, the ring of the black cat, which granted the power of destruction. Accompanied by its cheese-loving cat-like kwami, Plagg. And he had been wearing it ever since.

"Hey Adrien, wait up." Plagg called out.

"Plagg, come on. Can you swim a little faster?" Adrien said and stopped swimming to wait for his kwami.

"It's very difficult for me to move underwater, and you know it." Plagg said, as he finally caught up with his holder. "Can't you just slow down at times?"

"And can't you just try not to be grumpy at times?" He said and started swimming again as Plagg followed.

"If I'm not satisfied, no. Couldn't we stay at the palace today? I mean, your father organized a whole celebration for you."

"Yeah, the fourth celebration this month." Adrien said bored. "I'm tired of all these celebrations, and I'm tired of being locked up in the palace by my dad. I wanna spend my days exploring and learning about the human world. I don't know if you understand it but…I feel like I belong up there."

"Ok, ok, I got it. But seriously, what's gonna happen if you stay at the palace for just one day?"

"Well, I'd either have to study a book from the library for the thousandth time, I'll have to play all the songs I know to the piano or even worst: my father will invite Chloe for the thousandth time."

"Chloe?! You mean that blond annoying mermaid that calls you 'Adrikins' all the time?!" Plagg asked shocked.

"Yup, her."

"You're right, we have to stay away. But still there's one thing I don't quite understand."

"What is it?"

"Why didn't you transform earlier, since we're sneaking out?"

"Plagg, did you forget it…again?" Adrien asked slightly agitated, and stopped for a while.

"Don't be ridiculous, of course I didn't forget. I just wasn't paying attention the last time you explained it."

"Ok, I'll say it again, but for the last time."

"Ok, I'm listening." Plagg said and stopped swimming.

"You know, of course, that you need to eat something so you'll have energy to help me transform-"

"Tell me something I don't know." The cat-like kwami interrupted and Adrien gave him a deadpan look.

"But since the only thing you eat is that…ummm…what's that food called again?"

"Cheese. Camembert cheese. The most wonderful thing in the entire world." Plagg mumbled dreamily.

"Yes. And there's no camembert here, I have to give you what's closest to it and that's white coral. But since it's not camembert, no matter how much you eat, my transformation can last for just a little while, and that's without using cataclysm. You got it now?" the merboy said and started swimming again, as his kwami followed.

"Yup. And now that you mentioned it could you give me some white coral?" Plagg asked making a puppy (or in that case kitty) face.

"Alright. Here you go." Adrien said and gave him some white coral he had in his bag.

"Hey, since you're going to explore a shipwreck, look if there's any camembert there, will ya?" the black kwami asked, as he gobbled the coral his holder gave him.

"I doubt that there'll be any, but I'll see if I can find you some. Oh, here we are." The merboy said and stopped in front of an enormous sunken ship.

"That's the one you're going to explore?! That thing is huge!" Plagg exclaimed.

"And that's why I'll explore it. You're ready?" he asked and his kwami nodded. "Plagg, claws out!" he yelled and the cat-like creature entered his ring, making it black and a green paw was shaped on it. His tail then got black and he was wearing a black leather jacket, with a small bell as zipper. He was also wearing a black mask and two fake cat ears on his head, and his eyes got feline-esque and all green. He had transformed into Cat Noir.

Then he entered the shipwreck through a broken window and started exploring it, looking for human stuff. As he was swimming around he came across many stuff, but the object that caught his attention was a silver fork.

"What could that be?" he mumbled to himself "Bet Nino will know." He said and put it in his bag, as he kept looking around.

Then he spotted a small wooden pipe and put it in his bag too. As he was prepared to head to another part of the ship, a shark appeared out of nowhere and charged at the merboy.

"Ahhhh! Where did that thing come from?" Cat Noir exclaimed as he barely avoided the shark's teeth.

The shark kept charging at the blond, as he was using his baton to keep him away. Cat Noir then found the window where he entered from and swam outside as the shark kept chasing him. He then spotted a small passage, entered there and hid behind a boulder. The shark without noticing that the merboy hid, kept moving on into the passage. When he had gotten pretty far away, the merboy exited the passage and detransformed.

"Trick him like this? Cliché." Plagg said bored.

"Gimme a break. What's important is that we got rid of him. Now, let's go find Nino." Adrien said and swam to the surface as Plagg followed.

"What about the camembert?" Plagg asked.

"There was no camembert there."

"You didn't search the entire ship!"

"We'll come again tomorrow."

At the surface, on a small rock in the middle of the sea, a seagull was fiddling with a telescope.

"Hi Nino!" Adrien called out, and the seagull put the telescope in his eye, but he was holding it the wrong way.

"Wow! Merboy off the port bows! Hey Adrien! How ya doin' dude?" he yelled, lowered the telescope and saw Adrien standing right in front of him. "Whoa, boy you're fast." Nino said and Plagg shook his head.

"Nino, I've found some really awesome stuff." Adrien said and brought the fork and the pipe out his bag.

"Human stuff? Lemme check them out!" the seagull said interested, and started observing the fork. "Wow, that thingy's very special. I haven't seen many of those."

"Really? What is it?" the merboy asked excited.

"It's a dingle hopper."

"A…what?" Plagg asked.

"A dingle hopper, don't you know it? You're supposed to know it since you have lived with humans." Nino said.

"Of course I know it's called 'dingle hopper', I just didn't hear you." The kwami lied.

He knew that what Nino was saying about the human stuff wasn't …accurate, but he was always agreeing with him, because he thought it was funny watching him giving his own explanations for them. And what was even funnier to him, was the fact that Adrien believed him.

"Anyway, what's it for?" Adrien asked.

"It's simple. Humans use it to comb their hair." Nino said, and Plagg held back a laugh.

Adrien took the fork and tried to comb his hair with it, then he put it back at his bag, and asked Nino, curious "Why don't they simply use a comb?"

"Because they're humans and humans are weird." He answered.

"I see. What about that?" The merboy asked and handed the pipe to the seagull.

"Oh! It's a snarfblat. Humans use it to make music. Check it out." He then blew on it but all that came out was some sea water, a piece of seaweed and some sand.

"Music?" Adrien exclaimed. "I forgot all about the celebration! It must be over by now! Father's gonna kill me!"

"I told you we should have stayed at the palace today!" Plagg said crossing his arms "Now we'll have to face the music. Boy, I don't like it when your father yells at you."

"Really?" the merboy asked smiling at his kwami, as he put the pipe back to his bag.

"Of course! Have you seen his face when he does that? He's scary when he's mad." The kwami answered and Adrien gave him a deadpan look.

"Either way, it's time to go. Bye Nino." Adrien said as he and Plagg dived in the sea.

"Any time dude. Later." Nino said.

Well here's the first chapter. I believe it was pretty good. Please review.