While the superheroes were fighting the villains, the dogs' plan was being put into action. The hyenas were still trying to find our heroes, when all of a sudden...Dynomutt and Ace jumped right in front of the hyenas.

"Freeze you laughing fools!" Dynomutt told them.

"If you want us," Ace said to the hyenas "You'll have to go through us!"

The hyenas growled and attacked Ace and Dynomutt, who were trying to fight back. Meanwhile, Scooby, Scrappy and Elmo were sneaking to where the hearts might've been.

"How are we gonna find Batman and Robin's hearts?" asked Scooby.

Elmo shrugged.

"Uncle Scooby," Scrappy whispered "Over there."

While the Batman characters were battling, Scrappy saw two glowing, red hearts in a glass case connected to some sort of vacuum like device.

"The hearts" said Scooby.

"We have to get them back without being spotted" Scrappy whispered.

"But how?" Scooby asked.

Elmo nodded his head in agreement.

"The hearts" said Scooby.

"We have to get them back without being spotted" Scrappy whispered.

"But how?" Scooby asked.

Elmo nodded his head in agreement.

Scooby, Scrappy and Elmo tip toed to the glass case where the hearts were.

"Uncle Scooby," Scrappy whispered "You think you can blast that glass with thinner?"

"Ruh huh" Scooby whispered and nodded.

"The get to it" Scrappy whispered "I don't think Batman, Robin and Blue Falcon can hold off those hooligans for much longer."

Scooby took out the magic brush and shot thinner at the glass and it dissolved.

"Quick!" Scrappy whispered "Grab the hearts!"

Scooby used his front paw to grab the hearts but unfortunately, something happened, an alarm went off.

"What?!" the Penguin turned around "What the heck is going on?!"

"Someone has stolen the hearts" said Catwoman.

"Harley!" the Joker shouted at Harley "Don't just stand there! You and Catwoman go retrieve the hearts back!"

"Right on it sir" Catwoman cartwheeled to where the hearts were.

"Anything for you puddin" Harley cartwheeled after Catwoman.

They landed right in front of the dogs.

"Rikes!" Scooby jumped into Scrappy's arms.

Elmo ran behind Scrappy.

"Alright you cute puppies," Catwoman said "Hand over the hearts!"

"Hey!" Scooby pointed behind Catwoman "Rook over there!"

"Yeah right," Catwoman pointed her gun at the dogs "Like I haven't heard that one before!"

"Now be a good doggy and hand Mama Harley the hearts" Harley told the dogs. "OR ELSE!

"No really!" said Scrappy "Look!"

Harley and Catwoman turned around and they got caught in a net that popped out of Dynomutt's chest.

"You should've looked" Scrappy folded his arms.

"Quick!" Ace told the dogs "Get the hearts back to Batman and Robin!"

"Yeah!" said Dynomutt "This won't hold them for long!"

Batman, Robin and Batgirl had still been fighting the Joker, the Penguin and Poison Ivy. Their abilities had been too evenly matched.

"You know," Poison Ivy kept fighting Batgirl "If I take your heart as well, you'll disappear! And I'll have double the popularity!"

"Not a bad idea" the Joker pressed a button on the vaccumm thing's remote. "Get ready to have your heart sucked out!"

The vaccum nozzle planted itself onto Batgirl's chest.

"Say bye bye!" the Joker sadistically smiled.

"NO!" Batgirl gasped.

Just then, Scooby, Dynomutt and Ace made it.

"Get away from her you clown!" Scooby growled.

"Scooby-Doo?" the Joker asked

"I think you forgot to destroy him" said the Penguin.

The Joker clenched his fists "Curse that Harley Quinn!"

"I believe these belong to you!" Dynomutt shot Batman and Robin's hearts out his metallic chest.

Batman and Robin's hearts floated back right into the Dynamic Duo's chests.

"NOOOO!" the Joker shouted.

"Pipe down," said Poison Ivy "At least I still have Batgirl's heart"

"You won't get away with this!" Batgirl grunted as her heart was being sucked out.

"What the?" She turned around.

She saw Scrappy and Elmo pulling the "REVERSE" switch on the heart sucking machine. The nozzle was putting Batgirl's heart back in.

"Will you boys stop it?" Poison Ivy shouted.

"Don't worry," said Dynomutt "I got this!"

Dynomutt used his extension arm to grab the two fiends.

"Hey Joker!" he said "Hold this for me!"

A boxing glove on a spring popped out of Dynomutt's chest and sent both the Joker and the Penguin flying into the air.

Batman pressed a button on his utility belt and a net captured Poison Ivy, right before she made it out of the lair.

"Looks like crime doesn't pay" Batgirl put a hand on her hip.

"Quick!" said the Blue Falcon "We have to get back to the others!"

"Right!" Scooby said.

"We'll take these slimeballs to the state pen," said Robin "You guys better get back to your friends!"

"We will" said BF "But the Joker and the Penguin will be back and with a bigger crew. We will need more backup."

"Good luck against Dr. Zin, Blue Falcon" Batman shook Blue Falcon's hand.

"See you around" Blue Falcon shook Batman's hand.

The dogs went to say goodbye to the dogs.

"It was great meeting you Ace!" Dynomutt held out his paw "Put her there!"

Ace slapped Dynomutt's paw "See you around, Dog Wonder"

"Boys" Blue Falcon said to the dogs "We have to get back to the others!"

"See you Ace!" Scooby followed BF.

Meanwhile, Shaggy and the others were still at the place BF and the dogs told them to meet them. They were sleeping like babies. Shaggy was dreaming about a huge buffet.

"I would love fifths" he said in his sleep "Thank you"

Shaggy grabbed Brenda's arm and started sucking on it. Thinking it was a food from his dream.

"Huh?" Brenda started to open her eyes "What the?"

She saw Shaggy licking and sucking on her arm.

"AAAAHHHH!" She screamed.

Everyone instantly woke up and the volume of Brenda's screaming.

"Huh?" Dee Dee rubbed her eyes "What's going on?"

"Shaggy was sucking my arm!" said Brenda.

"WHAT?!" Everyone screamed.

"Oh yuck" Brenda shook the drool off her arm "Sick!"

"Shaggy!" Skip poked Shaggy in the stomach "What the heck is wrong with you? Why we're sucking my wife's arm?"

"Sorry, Brenda!" Shaggy shrugged "I was dreaming about food!"

"Oh my god," Brenda crossed her arms "You are such a pig!"

"Oh and you aren't?" asked Shaggy.

"What's that supposed to mean?" Skip got in Shaggy's face.

"Yeah," Brenda put her hands on her hips "What's that supposed to mean?"

"Nothing" Shaggy said nervously.

"You're worse than your friend Fred." said Skip

"What the hell do you mean I'm worse than Fred?" asked Shaggy.

"Shaggy," Daphne slapped Shaggy "Don't say 'hell'."

"Yeah," said Jabberjaw "May I remind you this is a kids story"

"Oh sorry" said Shaggy.

"Now," said Daphne calmly "Let's try that again"

"Whoa" said Shaggy "What do you mean I'm worse than Fred?"

"You mean you don't know?" asked Skip.

"Know what?" asked Shaggy "What are you talking about?"

"He's talking about Fred beating Shelly up" Bubbles explained.

"What?" asked Shaggy and Daphne.

"Yeah," said Jabber "He did. That's why we didn't want to help Fred remember?"

"Oh yeah," said Daphne "I forgot about that."

"And that's why Shelly isn't with us," Bubbles added "She's feeling sorry for herself. Biff stayed behind to talk to her. Fred's a jerk!"

Daphne gasped "How dare you? He is not a jerk!"

"But he beat up Shelly!" Taffy defended Bubbles "How is he not a jerk?"

"Yeah," Jabber added "He was showing Shelly no respect!"

"So?" asked Daphne "Why should he and Velma suffer?"

"Do you know how badly wounded Shelly was?" Bubbles asked Daphne.

"Pretty bad" said Clamhead.

"So?" asked Daphne "They're our friends! I'm just disappointed with Fred as you guys are all. In fact, the instant I see him, I am going to slap him in the face!"

"Wowee wow wow" said Clamhead "That's what Biff said before Shelly stayed in Big City."

"But I don't want him to die" said Daphne "Same goes for Velma."

"Daphne's right" said Mudsy "We're heroes and heroes have to save everyone when they really need it. Plus, Fred and Velma are part of Daphne's character family and I don't want anyone to lose their family. Trust me, I know."

"I have to go with Mudsy on this," said Dee Dee.

"Me too" said Caveman "After all, me am a superhero an superheroes have to help everyone."

"And besides," said April "My and Cavey's groups are gonna be a one big family soon. And if Mystery Inc. was gonna be part of ours, we'd want us all together."

"Yeah" said Shaggy.

"Please Skippie," Brenda made doe eyes at Skip and batted her eyelashes "For me."

"How can I say 'no' to you?" Skip kissed Brenda's temple.

"Gang look" Augie pointed to the sky "Up in the sky!"

Up in the sky, Blue Falcon was swinging on a rope down and Scooby, Scrappy and Elmo were riding Dynomutt, who was rocketing down.

"Zowie!" said Taffy "You guys are back!"

They landed on the ground.

"Elmo!" Augie hugged his dog "Daddy was so worried about you!"

"Scooby-Doo! Scrappy-Doo!" said Shaggy.

"Raggy!" said Scooby.

"We've saved the Dynamic Duo" said Scrappy.

"And I met and fought side by side with Ace the Bat-Hound!" Dynomutt added.

"We have to get back to Boomerland." said Blue Falcon "We still have more characters to save"

"Uh, guys?" Augie pointed out "It's getting late and we were just sleeping, so I figured-"

"Okay, okay," Scrappy said "Let's all go back to our homes and have a nice rest and then we continue our mission in the morning."

"Time to hit the sack Jack!" said Yogi.

"I'm going to Brenda's place" Skip said.

"Rait" said Scooby "Do we have time?"

Scrappy opened up his tag and checked the timer.

"Nope" Scrappy looked at his timer "Doesn't look like it. We better find a new king and fast!"

"Aw man" they all groaned.

"Guess we'd better get back to Boomerland so Mr. Van Ghoul can send us to the next world" Augie reached into his back pocket and took out the magic button.

"Ready everyone?" asked Daphne.

"Ready" they all said.

Augie pressed the button and they were blasted back to Boomerang Land.

Author's Note:

Looks like they've completed helping the Dynamic Duo and their on their way to the next world! In the meantime, let's see what Garfield is up to back home!