"Hey, Swoops!" Pickle greeted as the helicopter landed in front of them. "We need to get to Axle City! Pronto!"

"Yeah!" Darington agreed. "The twins made a submarine and are on their way to Axle City!"

"Oh no!" Swoops gasped. "Well, you guys called the right helicopter! I'll get you guys to Axle City before the twins get there!"

"Thanks, Swoops!" Pickle sighed in relief as they both hopped in.

They just hoped that they weren't too late.

X

"WOW!" Magma squealed as she and Inazuma hopped out of the submarine. "IS THIS THE CITY WHERE THE MONSTER DOME IS?!"

"I think so," Inazuma responded.

"YES!" Magma cheered then she grabbed her brother and looked around excitedly. "NOW LET'S GO FIND THE MONSTER DOME!"

"GAH! MORE DRAGGING?!" Inazuma yelped.

They headed through the city, oohing and aahing at the different sites they saw. They were all so amazed about the new place and excited to explore it all. Soon, they all found a large stadium where trucks were heading in.

"There it is!" Magma exclaimed. "Let's go!"

They both rushed inside and gasped to see the place crowded and full of audience. They were all cheering as Bump Bumperman went front to announce the race.

"Hello, racing fans, and welcome to the Monster Machines Championship!"

The crowd cheered in response, with a cheer and a roar. Magma and Inazuma squealed in excitement as they headed down to hear more.

"And as you know, the first monster machine to cross the finish line will win... THIS GIANT TROPHY!" Bump motioned to the giant golden trophy beside him.

"Ooh!" Magma's eyes lit up. "Giant trophy! We HAVE to win that trophy!"

"I don't know, Maggie," Inazuma said. "Those racers seem a lot bigger than us."

"Bigger, shmigger, who cares?!" Magma waved him off. "We can win this like how we always do things... like a team!"

"Well... I guess..."

"That's the spirit! Let's go line up!"

They zoomed to the finish line as fast as they can. As they did, they passed the pit rows just Gabby and Watts came out, the mechanic a teen now as they turned and noticed the twins.

"Hey... I don't recall those two as racers..." Gabby murmured.

"They look new... and young!" Watts pointed out. "Maybe first time?"

"Wouldn't surprise me," Gabby chuckled. "Come on. Let's go see."

They approached the twins, who stopped at their place. Magma narrowed her eyes at them, never seeing or meeting any more trucks than their uncles, their parents and, their Grammy before as Inazuma hid behind his tougher sister.

"Hey there!" Watts greeted. "What are your names?"

"I'm Magma, and this is Inazuma, my brother." Magma spoke, still wary.

"Nice to meet you, Magma and Inazuma!" Gabby greeted. "I'm Gabby and this is Watts,"

"Is this your first time here, little ones?" Watts asked.

"Yes, ma'am," Inazuma whispered.

"And DON'T call us 'little ones'!" Magma huffed. "We're seven!"

"Well, you both still look young to me," Watts laughed and patted their heads. "Though it isn't the first time kids went racing with us,"

"It isn't?"

"No, it isn't!" the group turned to see Sparkle, about a teen by then, driving towards them. "I started out as a kid myself! Nice to meet you, I'm Sparkle!"

"Hi," Magma greeted.

"Wait, there are new racers?!"

Suddenly, more of the racers swarmed in towards the twins. Inazuma yelped at the sudden crowd while Magma frowned and held out her tires.

"Hey, back off! You're scaring my brother!"

"Sorry, sorry," Starla looked slightly guilty before she held out a tire. "Nice to meet you. My name is Starla, and this is Stripes and AJ,"

"Hi," Inazuma said quietly, shaking it.

"D'aww, you're all so cute!" Stripes cooed. "Such cute kids!"

"NOT CUTE!" Magma huffed.

"Cute to us!" AJ giggled.

"We're NOT CUTE!" Magma pouted. "We're kids, but we're tougher than we look, and we are SO winning the race!"

"Oh, are you now?"

The group turned to see a Beamer-shaped Monster Truck with a periwinkle paintjob, cobalt line patterns on his doors, Blue-Gray hubcaps, Mauve racing stripes on his hood, Blue eyes, and X-shaped tire patterns appear from behind them. Inazuma hid more behind his sister at the stranger as Magma narrowed his eyes at him.

"Who... are you?"

"I am Cryo, the fastest racer in all of Axle City," the stranger spoke with a smirk. "Well, the fastest in all the world, actually,"

"Cryo is our friend," Stripes told them.

"And my cousin!" Sparkle added with a giggle.

"Interesting..." Magma frowned and backed up a bit. "Well, My name is Magma, and this is my brother, Inazuma,"

"Nice to meet you both!" Cryo grinned down at them. "But maybe you should go find your parents and make your way back home. This is a race for professionals!"

"Really?" Magma raised an eyebrow as she smirked. "Because professionals aren't always winners,"

"Cousin, don't belittle them!" Sparkle scolded.

"Yeah, Cryo, anyone can race!" Stripes agreed with a nod.

"Not itty-bitty, slow kids like them," Cryo mocked.

"We're not slow!" Inazuma said.

"You kids are cute," Cryo snorted and patted their heads. "But better leave this race to professionals!"

"But--"

"Come on, guys," Watts said, shooting Cyro a glare. "You can race with us."

"Really?" Inazuma's eyes lit up. "Yay! Thank you!"

"Well, whatever," Cryo huffed and turned to leave. "but if they slow us down, don't blame ME for it!"

"What's HIS problem?" Magma growled.

"He's... just like that," Starla shrugged. "Now come on, the race's about to start!"

As they all turned and headed to the starting line, Cryo turned back and narrowed his eyes at the two kids.

There was something awfully familiar with those children... He just couldn't pinpoint how... or where he had seen those markings on their bodies...

"You alright, Cryo?" A voice from behind him asked, and he turned to see an icy blue truck, looking very similar to Crusher, with diamond markings all over his body, drive to him with concern.

"No..." Cryo growled. "Hey, Glacier, you see those kids over there?"

"Yeah? What about them?"

"Take care of em." Cryo smirked. "I don't know WHO they are and what they want, but one thing's for sure; they're trouble,"

"They're KIDS, Cryo." Glacier glared at him.

"Pah-lease," Cryo rolled his eyes. "If you can attempt to kill your own sister at age 6, these kids would be no different,"

"Fine..."

Glacier sighed and headed towards the kids. As he did, he stopped for a while and narrowed his eyes at them.

They do seem familiar, though...

X

"And here we are!" Swoops announced as he hovered over the city. "Axle City!"

"Come on!" Pickle urged. "We have to find the twins!"

"Yeah, before Blaze and Crusher find out," Darington shuddered as they both hopped off. "You think they would've noticed us all gone by now?"

"Maybe..." Pickle grimaced. "Hopefully not, though, you know how they are. Let's just go find the twins before-"

"The twins are in Axle City?!"

The pair turned to see Zeg, Speedrick and Gasquatch dash towards them from the park, all looking shocked and concerned.

"Whoops..." Darington gulped.

"We'll explain later!" Pickle said. "We need to find them before they get hurt!"

"Where you think twins going?" Zeg asked.

"The Monster Dome!" the paid cried out.

"That's not good..." Speedrick hissed. "The Monster Machines Championship is starting in the Monster Dome,"

"We have to hurry!" Darington yelled then they all dashed to the Monster Dome as quickly as they can.

X

"And that's done! Blaze smiled as he set the shovel down. "Phew, planting new trees for the forest sure is hard, don't you think, Crush?"

"Yeah," Crusher agreed. "Should we check on the twins?"

"Worried so much already?" Blaze teased.

"What? Me? Maybe..." Crusher chuckled. "But be honest, aren't you? We haven't heard screaming or cheering for a few hours now,"

"Huh... you're right," Blaze frowned. "Come on."

The pair turned to head to their house. As they did, they found Roarian flying above them, looking a little worried as he looked around. He soon spotted them and headed down.

"Blaze, Crusher, there seems to be a problem,"

"W-What's wrong?" Blaze asked.

"I planned to check on the twins to make sure they weren't falling off any more cliffs, but I can't find them anywhere, along with Darington and Pickle," Roarian said before holding out a trampoline. "All I found is this,"

Hearing this made Blaze's stomach drop, and his eyes widen in panic.

"So... they're gone?! W-What do we do?! What if one of our so called friends found them and made a trampoline to escape?!"

"B, calm, calm," Crusher tried to calm him down before taking the trampoline into his tires. "Hmm... these colors... this trampoline's made out of scraps, and if I didn't make it then I know only one other truck who can,"

"Inazuma...?" Blaze choked. "So... they ran away?! Why? D-Did we do something wrong?! Ohh... I'd never forgive myself if someone got them or something happened..."

"I don't know, but we have to go find them," Crusher declared. "Roarian, can you lend us some flying magic?"

"Of course. I'll lend you as much as possible."

Roarian nodded and allowed his sunstone's magic to stretch towards them. The magic caused them to hover up before they headed off, out of the cave and after their children.