In Paris, Chrysalis has Akumatized Clara into Frighteninggale to make everyone dance, sing, or rhythm. Rena Rouge and Carapace were hit as well as Argos and Ryuko, being forced to dance, sing, or rhyme. One false move and they'll be frozen into pink statues.

"Keep up this dance, we still have a chance!" Rena Rouge rhyming while dancing.

"I'm no rhyme, I need more time!" Argos said while dancing but not good at rhyming, "Buggy! Get into boogey!" He said to his sentimonster.

"Ah yeah. Take the bug from the rug" Sentibug said.

"I agree but what plan can you see?" Carapace asked.

"No weapon harm but my lucky charm!" Sentibug calls on her senti-charm, "Handcuffs? So my hand can cuff them" She caught them and put them on hers and Argos's wrist.

"What the hell are you doing? I can still be going!" Argos rhyming while dancing.

"Follow my lead or you can read" Sentibug made her move.

"Ah, our movements are synced so we are linked!" Argos can move with her.

Frighteninggale saw the two rush at her, "No! You can't bend the rules! Handcuffed is cheating fools!" Frighteninggale yelled, remembering the last time.

"As in you cheat, you try to beat!" Argos smirked.

"Sinning is not singing!" Sentibug spun her yoyo.

And snatched the akumatized object from her. Sentibug knocked the Akuma person out so Chrysalis couldn't see through her. She morphed into SentiNoir to do his power, "Cataclysm" He cataclysm the akumatized object.

He morphs back to SentiBug to de-evilize it, "Time to De-evilize! Bye bye little butterfly" She released it.

"Good girl," Argos said, knowing how right he is to let Sentimonsters have their own will to learn themselves.

"I really am like them. Miraculous Ladybug!" She repairs the damage.

-

The heroes underwater were getting away from the mutated sharks going after Cat Noir. They can't fight and protect him at the same time. Especially when those things have huge teeth to chomp anything off.

"Cataclysm!" Cat Noir caused more boulders to fall to delay them.

"Adrien, we can't let them capture you!" Ladybug grabbed his hand to swim.

"This has to be the Shark holder's doing!" Cat Noir swam through a tunnel with her.

"And it still remembers what a black cat looks like!" Panthera stabs the ceiling tunnels to cause debris to close it up from being followed.

Blu Tembo saw another opening, "This way!" He leads them to it.

"It better not be a dead end! I can't concentrate with my GPS power!" Panthera swam with him.

"Elephants migrate to know where they are going!" Blu Tembo punched the wall to get through.

The four swam through as the shark mutants were gaining on them.

"Let's see if they hate my music!" Blu Tembo blows his horn so loud.

The shark mutants clutched their heads from hearing the loud noise.

"Go! Go!" Blu Tembo said.

The four got through the opening as it closed on them.

"Are you okay, Kitty?" Ladybug asked Cat Noir.

"Yeah, are you? Please don't scare me again" Cat Noir held her close.

"I'm okay," Ladybug said.

"Puuuuuurrrrrr" He purred in relief.

"I think we ditched them," Panthera said.

"For now. Those things have a lot of damn teeth" Blu Tembo said.

"Yeah, they do" Cat Noir sat up.

"They have to be those loyal to the shark holder to evolve. They can breathe air but I don't understand. Sharks can't breathe on land. They'll die" Panthera said.

"Yeah, but these are half man and half shark," Blu Tembo said.

"It also means the center of Atlantis is close," Ladybug said.

"Yeah, Princess" Cat Noir held her hand.

"I hope they are friendly. I don't like bullies" Panthera said.

"Me too," Blu Tembo said.

"Shh.....you hear that? It's sound like wind" Ladybug said.

"I'm hearing it too," Cat Noir said.

"And waterfall?" Panthera hears it.

They all stepped out to see a huge air pocket area, with the capital of Atlantis standing in the middle of the landmass that was spared from the catastrophe. Huge waterfalls fall into the lava trench below, creating large steam clouds.

"Milda Makter!" Blu Tembo exclaimed.

"It's beautiful," Ladybug said.

"Wow, it's just like with the dinosaurs," Panthera said.

"I got to hand it to your kwami, Kitty. We really came through to find it" Ladybug said to Cat Noir.

"Indeed Milady, we did it" Cat Noir held her hand.

"How is it possible?" Blu Tembo asked.

"Must be the work of Poseidon" Cat Noir said.

"Maybe. But why did the sea god choose to save them?" Panthera asked.

"I wonder that too," Cat Noir said.

Nearby, some human Atlanteans appeared behind them.

"Ay! Maldita sea!" Panthera bared her claws, not wanting to do that out of reflex.

"Jösses!" Blu Tembo gasped.

The Atlanteans pointed their spears at the four heroes.

"It's that Cat!"

"The ears and tail! The same ring from Black Nemean!"

"He's very young!"

"Speak!" The young warrior points his spear at Cat Noir.

"Uh....Meow?" Cat Noir uttered nervously.

"Don't hurt him!" Ladybug gets offensive.

"Step aside, girl!" The young warrior warned her.

"Lower your weapons! We already know what happened to Atlantis! Our gatito....uhh.....our cat is not your enemy!" Panthera said.

"If this is about what Black Nemean did, it wasn't his fault!" Blu Tembo said.

"Black Nemean brought bad luck by bringing that box! You four are coming with us to the King!" The leader said.

"Plagg didn't mean to sink Atlantis! He has been carrying this burden for centuries! Don't make him feel guilty for it!" Cat Noir begged.

"You're coming with us still!" They forced them to walk across the bridge with them.

Panthera snarled but Cat Noir stopped her, "Don't. Just do what they say" He said.

They walked on the bridge with the guards behind them, "Amazing they know all languages" Ladybug said.

"Maybe not. We can hear through their language. It's like Dr. Doolittle can hear animals talking while the outside of him, everyone hears animals not talking" Panthera said.

"That figures" Ladybug replied.

They looked up and saw several monuments and statues. Memory flashes through Cat Noir from Plagg's memories transfusing to him of Black Nemean coming to Atlantis when it used to be on the surface. It showed him holding the Pandora's box in his hands. Memories keep flashing like Plagg carried these memories of his previous owners to pass them to the current holder now. He saw all the terrors Pandora's box released into Atlantis. He was snapped back to reality when the soldiers made him walk.

"Move it!" They brought him to the temple.

"Kitty, I don't like this" Ladybug whimpered.

They saw the new king on the throne, with the awakened Chompp by his side.

"We found them at the falls," The guard said.

"Leave him to me" The King approached Cat Noir.

He used his tiny dagger to pinch Cat Noir's chest which can cut through any magical suit.

"Agh!" The feline since and saw the king taste his blood.

"It's him all right. You carry cataclysm in your blood! Yet you're very young" The King looks at his arms, "His arms are thin and puny" Then he yanked the tail belt.

"Ow!" Cat Noir pulls his tail back.

"The tail...very unusual that I never seen. Unlike your friends here. Not even your soulmate bears the resemblance of a black cat" The king checks out Panthera.

"He's not my boyfriend," Panthera said.

"Those black cats are all the same as Black Nemean! They are destroyers!" Chompp yelled.

"You're a kwami," Ladybug said.

"Of course! I'm the kwami of surprises, young lady!" Chompp flew near Ladybug's face. She could see his eyes were bloodshot.

"You're surprisingly full of hunger and rage for a kwami" Ladybug nearly flinched.

"Plagg sunk our continent rather than stop the terror the box released us!" Chompp snarled, his sharp teeth showing.

"Pandora's box? He told me what happened but Plagg is not a murderer" Cat Noir said.

"But Black Nemean shouldn't have brought it here!" Chompp yelled.

"Throw the others into the dungeons! We're gonna ensure the cat suffers!" The King ordered his men.

"Cataclysm!" Cat Noir summoned his power, "That's enough! I dealt with a lot of things in my life and I am not gonna let you do the same thing! Let my friends go!"

"GET THEM OUT OF MY SIGHT!" The king yelled to his guards.

"STOP!!!" The dolphin holder queen stops them from killing each other again.

"Why should I? He's the new cat holder that destroyed our ancestors!" The King said.

"My dear, he's just a kid," The Queen said.

"Children are troublemakers," The King said.

"Look your highness, we've come a long way," Ladybug said.

"Three teenagers, one adult," The Queen noticed.

Panthera growled lowly at being called a young teen every single time because of her petite body, "Young adult, your Highness. I'm technically 20 years old" She corrected her.

"Two teenagers and two adults" The Queen corrects herself.

"Put it away, gatito," Panthera said, gesturing his cataclysm hand.

"I can't. It can only go away if I touch something" Cat Noir saw a rock and touched it as it cracks into bits.

"What do you want us to do?" Ladybug asked the royal couple.

"My question is how did you find this place? We never had surface people down here" The King said.

"My kwami told me, he remembers through Black Nemean," Cat Noir said.

"I see" The King replied, "But you must leave Atlantis at once!" He became serious again.

"Your majesty, be reasonable. We deserve rest" Cat Noir said.

"My kitty has been having weird dreams and it brought us here. It's like some kind of warning" Ladybug said.

"Then I suppose his prophetic dream made him come down here for nothing," The King said.

"But what about those terrors your ancestor released from Pandora's box?" Blu Tembo asked.

"My ancestor was a fool. Never again trust backstabbers. My people know the story" The King said.

"Whoa, whoa, whoa! I got nine lives, shark! Don't try to bite my face. I love my face with less scars" Cat Noir grabbed Chompp from trying to bite him, "Calm down, shark. My friend loves animals and I never harm animals"

"Then don't let your kwami near me! He's done more than enough" Chompp said.

"This way" The guards escort them to their rooms.

Panthera let a jaguar snarl to tell the kwami shark to back off or get a nasty bite from a big cat, "Back off from our kitty, biter! I hate bullies!"

"Hmph!" Chompp crossed his arms.

"Big cats eat fish!" Panthera growled.

"Easy, amiga. Calm down" Blu Tembo said.

"Sorry Elefante" Panthera said.

"Big cats are feisty, don't get on her bad side" Blu Tembo glared at Chompp.

"Very well," Chompp said before floating to his holder.

The guards escort them to their huts.