The Neanderthal chief has been told that the geyser is developing and it's the only chance for the heroes to get back home to the surface.

"He says that the geyser across the north is being activated," Tusk said.

"We got one chance before the geyser starts another in the next 20 years or less," Mr. Cantillo said.

"I'm sure gonna miss you, Tusk. You belong with the chief now" Blu Tembo hands the miraculous of the Mammoth to the chief.

"And I'm gonna miss you, Sabor. The chief's wife will be your new holder" Panthera said, kissing the kwami's head before handing the miraculous to the chief's wife.

Mr. Cantillo was about to hand the Velociraptor talon necklace to them but the chief insisted he keep it since this human became the best raptor holder.

"Very well then. After all, he became my best friend while I was stuck here" Mr. Cantillo said.

Razor hugged his owner's cheek that he was going to the surface with him, "I'm so excited to see the new world after millions of years" Razor said.

"You better believe it. You're gonna love it" Mr. Cantillo said.

Pelle then took his old camera up, "One last picture before we go" He suggested.

"And back with social media too. I was gonna think of creating a Cat Noir blog" Luna said, looking at her phone having a glitch of everything due to no reception.

"Good, because I need my fandom than share blog with Bugaboo" Cat Noir said, "No offense" He looks at Ladybug.

"None taken but be happy you have a number one fan," Ladybug said.

"Yeah. Thanks, Milady" Cat Noir then stood with her, Pelle, Luna, and her father for a picture.

Trunkk holding the camera. Even if the kwamis can't be seen in photos or film. The picture flashed and the printed picture came out of the camera.

"Polaroid cameras are the best," Pelle said.

"90s camera always old fashion. Look at us. Sorry, Clawws. Technology doesn't work on kwamis to be seen on film or photo" Luna apologized.

"It's alright. You can draw us" Claww said.

"Well, another picture to the collection. Well looks like we do have not much time to get to the geyser" Pelle checks his watch.

"How much time we got?" Ladybug asked.

"24 hours or less. We need to move" Pelle said.

The teen Neanderthal boy and girl grunt together to bring them to the pterodactyls as transportation to help them fly.

"Purrfect. I always wanna fly those" Cat Noir climbs up one Quetzalcoatlus, "There's room for you too, Bugaboo"

"The biggest flying dinosaur ever" Ladybug got on behind him.

"Pterosaurs aren't dinosaurs, but close enough," Cat Noir said.

"Still a dinosaur to children, kitty," Ladybug said.

"We need to transform. Clawws, let's hunt" Luna transformed into Panthera.

"Agreed. Trunkk, flap my ears" Pelle transformed into Blu Tembo.

"I'll ride with him, Dad," Panthera said.

"Hold on tight. Razor, Let's run!" Mr. Cantillo transformed into Raptor man.

The Neanderthal teens grunt and get on their pterodactyl to help the heroes where the geyser is.

"Let's move!" Cat Noir hits the reins on his pterosaur to take off.

Panthera blushed at seeing her hands around Blu Tembo's waist.

"Ummmm," Blu Tembo noticed and blushed too.

"Uhh, the view is amazing" Panthera hides the blush.

"Yeah, sure is" Blu Tembo chuckled nervously.

As they flew, he decided to have a little fun by blowing by his horn, and making a loud elephant trumpet, catching the attention of the mammoth herd. He looks down and waves at them.

"Wow, míralas ir" Panthera said.

"Get ready, animals! Here we go! Whoooooohoooo!!!" Rapto Man made his flying beast glide down near the biggest waterfall.

The other four followed down the fall and then up again, flying up through a herd of dinosaurs.

"Hold on, Bugaboo!" Cat Noir made his pterosaur fly under a brachiosaurus.

"Look, Pelle! Iguanodons! Just like from Disney Dinosaur!" Panthera points at the herd of them.

Blu Tembo looks down seeing them all in herds roaming.

"Plagg may have been responsible for the extinction of the dinosaurs but at least the ones today survived underground," Cat Noir said.

"Yeah, and they are all safe down here. Must have been Tikki's doing" Ladybug rests her head on his back.

"Prehistoric mammals and dinosaurs co-exist with one another, Chico," Panthera said.

"Let's hope this place remains untouched by modern society," Cat Noir said.

"Ah yes" Panthera nodded.

Cat Noir noticed Ladybug resting her head on his back, probably daydreaming.

-

From below, Cerise saw the pterosaurs flying. Angry that they were moving ahead and she needed a new dinosaur to akumatize. She spots a Quetzalcoatlus battling a pterodactyl for food but the largest was the biggest.

"Perfect. Time for you to be my next akuma to bring extinction to those pathetic modern animals" Cerise held out an akuma from her makeup kit.

-

The heroes were enjoying the view of seeing dinosaurs living to survive underground. But it didn't last when a meteor almost hit the heroes, causing their reptile birds to get startled.

"What the hell was that?!" Blu Tembo said.

"A meteor! But there's no sky!" Ladybug said.

The Neanderthals howled in alarm at something behind them in midair.

"Watch out!" Cat Noir moved his flying beast aside when a meteor crashed against the herd of brachiosaurus.

"Dear god! It's another Akuma!" Ladybug saw the akumatized Quetzalcoatlus.

"It has to be Chrysalis after us!" Cat Noir dodged another meteor.

"Dio mío! Does she ever stop becoming like her father for one second?!" Panthera screamed in anger.

"Apparently not! Cave girl, calm that beast with serenity!" Blu Tembo said to the Neanderthal girl with the triceratops miraculous.

"We'll buy her some time before that thing destroys the dinosaurs!" Ladybug said.

"You got it, Ladybug. I'll keep our flight steady!" Cat Noir said.

"Lucky charm!" Ladybug summons her charm. And then lands a slingshot in her hands, "A slingshot?"

Panthera sees Chrysalis heading to the cave with steam coming out, "Chico! Mira!" Panthera moved Blu Tembo's face in that direction.

"Shit! Caveboy!" Blu Tembo calls the Neanderthal boy to stop Chrysalis, gesturing by pounding his fists together as a sign of stopping her.

He nodded and transformed into his T.rex hero form, bellowing like his namesake.

"Tembo, we have to help them. If she somehow escapes, she'll tell the world who we are. Especially Ladybug and Cat Noir's secret identities" Panthera said.

"She must be stopped, no matter the cost!" Blu Tembo hits the reins of his pterosaur to turn around to face Chrysalis.

Trex boy made it to stop Chrysalis by jumping off his ride and pounced on her, "BAM!" He ululated.

"Agh! Get off me you brat!" Chrysalis tried to shake him off, dropping the akumatized bone that controls the Quetzalcoatlus.

The heroes lands on the ground, "Chico, you gotta erase her memories of discovering our identities and Ladybug's" Panthera said.

"This is cruelty!" Blu Tembo said.

"Cruelty or not, she's the evil cruel bitch here, not you!" Panthera running with him.

"I hope I know what I'm doing," Blu Tembo said by saying the opposite word of recall, "Obliterate!" He blew his horn.

It hit Chrysalis and caused her to forget Blu Tembo, Panthera, and Ladybug's identities.

Trex boy bites Chrysalis in the arm, savagely, "AAAARGH! GET OFF ME!" Chrysalis tried to get him off.

Ladybug shot her slingshot at the Quetzalcoatlus's eye, knocking him out to stop spitting out meteors from its mouth.

"Cat Noir, kill it before she recovers!" Ladybug said.

"I thought we agreed not to cataclysm a living being!" Cat Noir said.

"NOW!!" Ladybug yelled.

"Here goes!" Cat Noir then shouted, "CATACLYSM!!!" He touched it and it turned into ashes.

From below, the Akuma left the akumatized object, purifying itself that the victim is dead and has no control of it.

"I'm sorry" Cat Noir looks down, then turns at Chrysalis, "It's over Cerise!"

Panthera tried to kick Chrysalis but her block heel clashed with hers, grunting in sync as they struggled to get off.

"This is far from over, Panthera!" Chrysalis said.

"Shut up!" Panthera grabs the tree branch and kicks her with her other feet.

"AAAARGH!" Chrysalis lands near Ladybug, who uses her yo-yo to pull her up close by her neck.

"I have had enough of you, Cerise! You've done enough harm in the underworld!" Ladybug said angrily.

"Marinette is the one who has done enough to ruin my life! Especially you, Ladybug! The day you embarrassed me in front of Adrien!" Chrysalis pulled the yo-yo and headbutted her.

"ARGH! Just you and me Cerise!" Ladybug recovered, glaring at Chrysalis with hatred. She jumps and kicks at the butterfly holder.

The longer they fight, the longer they'll waste time before the geysers stop and there won't be another chance to get out.

Chrysalis whacks Ladybug hard with her cane, "Enjoy your extinction world, Ladybug. Time for revenge on this baker girl for ruining my life!" She punched the rocks to block the entrance as she jumped through.

"NO!!" Ladybug try to get through but the rock debris covered the entire entrance, "Shit!" She punched it.

Trex and Triceratops girl grunts to tell them to stand back so that Trex boy can use his club to smash the debris rocks repeatedly to crumble the rocks into tiny pieces.

Triceratops girl apologized to Ladybug that she couldn't calm the Quetzalcoatlus since her power wasn't strong enough for an animal with massive rage.

"Things like that happen. But we must get there quickly! In less than 12 hours the geyser will erupt" Ladybug said.

"She's right, Let's get Cerise!" Cat Noir said.

"Thank you, guys. As much as we hate goodbyes but at least our hero friends found the miraculous for you to protect your world" Panthera said to the Neanderthals.

T. Rex Boy smiled at them. Triceratops girl hugs the heroes for showing them what human evolution would look like.

"I hope we'll see you two again someday," Cat Noir said while hugging her and T. Rex boy.

"And that you two use the miraculous for the greater good," Ladybug said. Triceratops girl nods while grunting.

"Right now we gotta get out of here before that scary butterfly tries to seal us in!" Raptor Man said, getting impatient.

"Yes. Blu Tembo, did you say we have less than 12 hours?" Cat Noir asked Blu Tembo.

"That's right" Blu Tembo nodded.

Triceratops girl whistles for a velociraptor to help them find where the geyser is since this place is like a maze. It startled the heroes but Trex Boy assured them that it could help since it has more senses than a human. It sniffs all five of them to make sure he remembers their scent if one of them gets lost in here.

"Let's follow that raptor. We got a butterfly to catch up to" Ladybug said.

"Thank you, guys," Panthera said.

The Neanderthals waved at them before leaving. The heroes can see it's like a cave filled with mazes and Chrysalis could be in here somewhere. Unaware that she akumatized herself into Chameleon again to fool them. She needed one of them to take form and she glances at Panthera who has the power of tracking.

"I'm telling you, it's like a whole story to keep to ourselves," Panthera said to her partner.

"The world can't know about this place," Blu Tembo said.

Unaware that Chameleon put her hand over Panthera's mouth and kissed her cheek to take the form of her, putting the real one to sleep. Fake Panthera comes out and smirks evilly to blend in with them.

"True about that, amigo," Chameleon said.

"The sooner we leave, we'll stop Cerise," Ladybug said while Chameleon was behind her.