The scene started off with robots being destroyed in a clearing. An intact motobug rolled onscreen only to be chased down by a wrench-wielding Tails. However, Amy smashed the bot with her hammer before he could do any damage.

Off to the side, Sticks shouted as she threw her boomerang, destroying one of the crab bots. It crumbled to pieces, and Eggman's octopus robot revealed itself from the bushes. Inside, Eggman aimed its cannon, firing a glob of ink in Sonic's direction.

The blue speedster slipped on it as he ran forward. He flailed his arms to keep from taking a tumble. "Uh, I could use some help here!"

"Uh...help with what?"Lilac asked, confused.

"Keepin' his balance?" Carols joked, snickering

Sonic frowned. "Very funny."

Dave approached with a green and yellow launcher, smirking. "I'm all over it." He ignored Sonic when eventually fell to the ground with a huff. "Anyone order a butt kicking with a side of pain and extra humiliation sauce?"

Tails wasn't expecting this. "Dave's fighting on their side now? Since when?"

"This is already going in a direction that I don't like," Knuckles groused.

A multitude of burgers were launched out of the weapon and right at the octopus bot.

Eggman growled as he was bombarded, pressing a button that shot out a blue beam.

It exploded right at Amy's feet; she yelled as she was hurled helplessly into the air. Before she hit the ground, Knuckles sped over on two hoverboards and caught the pinkette with ease.

Knuckles grinned at her. "I always knew you'd fall for me."

Amy dreamily sighed.

Sonic, Amy and Knuckles widened their eyes in shock.

"Are they in love?" Tails asked.

"NO!!!"

Inside his robot, Eggman was shaking a fist. "Knuckles the Echidna! My arch nemesis..."

Knuckles, having put Amy down, glared. "You never learn, do you, Egghead? You'll never defeat my team!"

"Your team?!" Sonic raised a brow.

"Sonic, it's just another dimension." Silver pointed out, confused.

"I know. I know."

"I'm glad it is." Amy admitted. The thought of her and Knuckles. She shuddered. She didn't want to think about it.

Sonic quickly sidled up to him with a smile. "We're a team? We should get matching uniforms!"

"Oh, Sonic," Knuckles began like he was talking to a child. "Uniforms, by definition, match." The echidna patted him on the head as a good job for listening, Sonic accepting the gesture. Knuckles dropped his hand, saying, "Now if you'd excuse me, the grown ups have some work to do." He ran off as Sonic watched in awe.

Sonic was gaping, temporarily speechless.

"It seems like your double and the other other Knuckles switch places." Anti-Tails pointed out.

Scourge nodded. "Only the difference is Knuckles is more mature and Sonic's is becoming his fanboy."

Sonic choked. Him?? A fanboy?? Of Knuckles?!?! This has to be a dream. That's right. It has to be.

Knuckles snorted. "I wish that dimension was the actual one we were following."

Sonic ignored and continued to say that this was a dream.

Knuckles revved up his boards again, sending one flying into a remaining crab robot. The other crashed into the weak spot under the octopus bot. Black smoke spewed from the machine as it fell out of the sky.

Knuckles flipped into the air and punched the ground with enough force to produce powerful shockwaves to knock Eggman's large mech backwards.

Carol pumped her fist in the air. "Heck yeah! Nice one"' She didn't if this Knuckles was different than the other one. This Knuckles was awesome!

It crash-landed and simultaneously shot out two beams: one red and one blue. They rebounded off a tree and combined into a thick purple ray, aiming right for a stunned Knuckles.

"No!" Sonic jumped to push him out of the way, but he was too late. The ray blasted Knuckles, making him disappear from sight.

"So that's how he probably gets into the other dimension." Milla pondered.

"I totally didn't expect lasers though." Tails added, humming. "I thought for sure the Chaos Emeralds would be involved somehow."

Sonic slid on the sand, smiling as he caught a chili dog. "Got it! That was almost the worst disaster imaginable." He stood back up and bit the 'dog, groaning at the taste.

Tails and Amy were sitting at a decorated table outside of Amy's shack, and Sticks was grilling some food beside them.

They all snapped their focus onto the red echidna that flickered into existence.

Sticks gasped and shouted, "Ah! Kill it with fire!"

"Calm down!" Tails placated. "It's just Knuckles."

"Oh." Sticks blinked before shouting once more, "Kill Knuckles with fire!"

Still holding his chili dog, Sonic grinned at the echidna. "Cool entrance, Knux."

Amy wasn't as impressed. "You were supposed to get hamburger buns."

"So they're not fazed at all by Knuckles just randomly popping out of nowhere?" Cory questioned.

"They should be used to it at this point since there aren't any Chao Emeralds." Shadow remarked.

"This is so weird..." Silver muttered. It wasn't as weird as Sticks, though. Nowhere close.

Knuckles rose an uncertain brow. "In mid battle?" He frowned. "Sweet Amy, there will be time for your delicious burgers after we've defeated that dastardly deviant Eggman."

Milla was impressed. "Someone's been taking up reading classes."

Sonic approached the table, amazed. "Nice vocab."

"And impressive alliteration." Tails tilted his head. "You've been taking night classes?"

Then, another Knuckles walked up with a tray filled with hamburger buns.

"Hey guys." He stopped to inspect the other echidna there, smiling. "Who's the beefcake?"

Lilac blinked. "Umm, your other-self??"

"Save your breath, Lilac." Spade grumbled.

The scene cut to inside the shack, where the two Knuckles were sitting on a couch with the rest of the team eyeing them.

"They really look alike..." Sticks started with a critical gaze. "We need to figure out how to tell them apart."

"How exactly?" Sonic asked.

"I'm guessing Amy will be the one to figure it out." Knuckles said.

"What makes you say?"

"I know!" Amy chirped when an idea came to her.

Knuckles looked at Sonic.

"Oh."

"Our Knuckles can wear something to distinguish himself!" Some of her enthusiasm waned when she asked, "But which one is our Knuckles?"

One of the echidnas sat forward. "Well, that depends... What does distinguished mean?"

Sonic snickered. "Bingo."

Amy ran off and came back with a blue party hat.

"No way!" Knuckles harshly opposed. "I'm not wearing that!"

Amy furrowed her brow, but couldn't help but agree with the red echidna. That party hat looks like a child's hat.

The other Knuckles hopped to his feet, unbothered. "I'd be honored to wear your ridiculous hat, my dear." He went over and donned the hat, snapping the rubber under his neck.

Amy sighed dreamily.

"Hey! No!" Amy jabbed her finger at the television. "No! No! No! You stop that right now, young lady! The other other Knuckles might be suave and eloquent, but that gives you no right to fall for him! Remember, steroids might be involved with those echidnas!"

Knuckles glanced at the screaming pink hedgehog. "I dunno if I should feel relieved or insulted..."

Sonic was pleasantly surprised with what he was seeing. "He may look like Knuckles, but he sure doesn't talk like him."

Knuckles glared. "Hey! I talk gooder than you!"

Everyone else resisted the urge to sigh.

Tails cradled his chin in thought. "There's a perfectly rational explanation for this." There was a long pregnant silence while the kit thought and the others waited. Eventually, Tails shrugged. "I...just haven't figured it out yet."

There was a collective groan.

"He killed some time," Eggman started. "I appreciate his efforts if only for that sole reason."

Hat-Knuckles stood by the kit's side and consoled, "Worry not, young Tails. Be diligent!" He put a firm hand on his shoulder. "In time, the answer will seek you."

"Whoa..." Knuckles breathed out. "I sound like a fortune cookie!"

Sonic smirked at Knuckles. "Didn't you say that during the one of the other episodes, Knux?"

"Shut up."

The echidna bit his arm, slumping in disappointment. "But I don't taste like one."

Hat-Knuckles ignored him. "There's only one person smart enough to unravel this enigma..."

They were now standing in Meh Burger with Dave at the counter. "Welcome to Meh Burger. Can I take your order?"

Carol busted out laughing. "Dave?!?! That other dimension is really somethin' else!"

"Dave!" Hat-Knuckles gleefully exclaimed. "I'm glad I found you, friend!" He leaned on the counter. "We need your brilliant mind."

Dave remained emotionless. "Sorry, we're all out of that. May I recommend the Meh-rib sandwich? They're only available for a limited time."

"They sell brain there?" Tails felt sick to his stomach. "That's horrible!"

"Eh, maybe it helps people gain some missin' IQ points."

"Eating it would cause terrible brain deteriorating diseases that can't be cured, Sonic." Lilac retorted.

"...Oh. Nevermind then."

"What's going on here?" Hat-Knuckles was dumbfounded. "Everyone seems to be the opposite of their normal selves."

Tails pensively hummed before perking up. "I think I understand what's happening. They say it's available for a limited time to create a false demand!"

Sticks nodded. " That's how they getcha!"

"Also-" Tails returned to the situation at hand, gesturing to Hat-Knuckles. "-I just figured out that this guy is from another dimension!"

"What other explanation could there be?" Spade asked in slight frustration, rolling his eyes. "That he's the buffoon's long-lost twin?"

"You act like that's impossible," Knuckles muttered. "I wouldn't be surprised if that's the plot of one of these episodes."

"Another dimension?" Sonic repeated dubiously. "You mean with duplicates of each of us?"

Sticks' eyes were wide as she held her head in her hands. "What if another one of me shows up? I can't trust me. I'm a loose cannon!" She screamed in panic and ran off with everyone watching.

"A loose cannon is freaking paranoid." Shadow mumbled.

They relocated to Tails' workshop, and the kit began to explain what was happening. "For years it's been theorized that a mirror dimension exists parallel to our own."

Milla widened her eyes in awe. "Whoa...how many alternate dimensions do you guys think there are? There has to be more!"

"A lot." Theo answered. "There's no limit."

Sonic spoke up. "Theorized..." He trailed off at the appearance of the bow-tie beaver in the window. They stared each other down for a moment until Sonic continued with, "...by whom?"

Disappointed, the beaver slunk away.

Tails motioned to himself. "Theorized by me!" He turned to the echidnas. "You see, the two Knuckles are polar opposites. One is smart, sophisticated, charming, likable, and a born leader."

"Thank you," the echidnas replied simultaneously.

Knuckles just shook his head.

Tails smirked. "And the other one thought I was talking about him."

"So how do we send him back?" Amy asked.

"That depends on how he got here in the first place," Tails replied, aiming his question at Hat-Knuckles. "Silly hat Knuckles, what's the last thing you remember?"

He recalled the events with a sure voice. "As I led my team to certain victory, Eggman's octopus bot was shooting red and blue energy beams. Two of them crossed, creating a purple beam. Sonic tried to save me...but he was too clumsy and fell."

Sonic tisked in mock-disappointment. "A shame to all Sonic-kind."

"Boy." Knuckles chimed in. "The two dimensions really aren't that different!"

Amy wondered what went on in that echidna's head. "You know that your Sonic isn't that clumsy, right?"

Tails cradled his chin. "Hm...I'll need some time to experiment so then I can replicate the beam frequencies."

Hat-Knuckles waved him off. "Forget that. If the Eggman of my dimension had the technology to send me here, the Eggman of yours should have what we need to send me back!"

Eggman knew that the episode would make it around to his other self. Is there any day where his double doesn't show up?

"Great idea!" Amy was on board with this. "Let's go ask Eggman!"

"Ask?" Amy didn't like the sound of that.

"Her attraction to the echidna has impacted her logical thinking." Torque stated, without thinking.

Amy glared at him.

"I'll be quiet now..."

He smirked. "Who said anything about asking?" He clenched a fist. "Let's take it! Better to ask for forgiveness than permission."

Amy perked up. "That's more like it!"

Knuckles wouldn't mind meeting that echidna. "Less talk and more action is the best way to handle situations like this."

Lilac was about to comment on that, when she realized that her friend, Carol, is just like the red echidna. So, she shouldn't be surprised.

Knuckles was awed. "Wow! I sound like a whole box of fortune cookies!"

"Let's do this!" Hat-Knuckles prompted, strolling over to the door. "Follow me, team!"

Sonic stepped in his path and held out a halting hand. "Not so fast, Silly hat Knux. We're not aggressors. " He lowed his arm, gesturing to the fox. "Tails will figure this out! We need to be patient."

"Patient?" Knuckles snorted. "I'm sure Sonic's familiar with that word."

"Hey, I can be patient sometimes!" Sonic argued.

Tails look at him with a blank look. "You can't even stand still for five seconds without running around in boredom." He pointed out.

"You can sit on the side-lines if you want," Hat-Knuckles argued. "But I'm taking action." He ran out of the workshop.

Knuckles walked up, looking lost. "I don't know what just happened, but I'm pretty sure we're mad at you guys." He ran off as well, but he picked the wrong direction and slammed into a wall.

Knuckles glanced askance at Sonic, and the speedster uttered, "Well, his best isn't the same as your best, Knux. But it still counts."

Later, Knuckles was sitting at a table by himself at Meh Burger. His chin was propped up with his palm as he sighed.

Sonic, Amy, and Sticks approached his table. "Oh, there you are, buddy." Sonic greeted once he was by his side. "I hope you're not mad about before." He motioned to a card with a sun on it that Amy revealed. "We got you a card to cheer you up."

Amy read the words on it out loud. "Sorry that the alternate dimension you is a jerk." She placed it on the table when she finished.

Amy clasped her hands together. "Aww – but wait, that doesn't make any sense. Knuckles likes him, and the people who potentially won't like him are the rest of the team. So why are they giving him a card?"

Tails agreed with her, but, "He has to be sad for a reason, though..."

Knuckles attempted to pick the gift up, but he grunted as he struggled to lift the paper. Amy and Sonic shared a concerned look until the echidna gave up.

Knuckles felt a little bad for his twin. A little.

He slammed his fists down on the table. "Stupid card! I didn't want to lift it anyway!" Knuckles went to stand up, but his legs couldn't support his weight. He collapsed to the ground; his friends stared in shock.

Well that came out of nowhere. "Is he okay?" Silver questioned with a subtle frown.

The scene then cut to Eggman's lair where Hat-Knuckles was destroying every robot that attacked him. However, after a punch to a bee bot, he flickered in and out of existence until solidifying again. The echidna didn't notice, continuing to pummel the rushing bots.

Amy pursed her lips. "One, how do you not notice that, and two, what?!"

"I'm sure we're all thinking that," Blaze muttered.

Back at Tails' workshop, Knuckles was laying on a tabletop with a blanket covering him and a thermometer in his mouth. The rest of Team Sonic had surrounded him.

Knuckles glanced at Sticks. "I'm fine, guys ," he murmured around the device hindering his speech. "I swear!"

"Liar." Cory said, shaking her head.

He flickered like his twin, and Sticks had to hit his head to get him to stop. "I hate it when he does that!"

Rouge blinked, puzzled. "Is...Is she treating him like a TV?"

Knuckles grunted. "At least she isn't setting him on fire."

"This must be tied to the other Knuckles..." Tails suggested.

Knuckles blinked at him. "You mean the guy with the hat?"

"Who else would he be-" Knuckles clenched his jaw. "Nevermind."

Tails resumed like he hadn't spoken. "Having two of you in the same dimension is causing a catastrophic anomaly!"

"Aw, that's my least favorite kind!" the echidna commented before rethinking. "Well, that and mint chocolate chip." He made a sound of disgust.

Tails felt being punched in the gut. "How can you hate mint chocolate chips?! It's two amazing flavors combined into one!"

Sonic was iffy about it. "I dunno, Tails." The kit gaped at him. "Think about it like this: you wouldn't mix soda and milk together, would you?"

Tails stuck his tongue out in disgust.

"See! Two great things don't always come together to make a better thing."

"But mint and chocolate are different."

"It's disgusting, Tails."

"Eating chilli-dogs is disgusting!"

Sonic felt being punched in the gut.

Sonic frowned. "Tails, English please?"

"Because both Knuckles are here-" the kit began again with simpler terms. "-the boundary between the two dimensions is eroding! Eventually, both will implode. We need them together so we can send the smart one back!"

"Is that really a thing?" Milla asked.

"In that universe? Yes." Andy answered.

Sonic nodded. "Okay, Tails, keep working on your...red-blue-purple bream thing. Amy, Sticks, and I are going to Eggman's lair to bring back..." He paused to think. "That other guy."

Cutting back to the evil base, Hat-Knuckles was now inside destroying robots with ease. He ran toward an observing Eggman, smashing the two machines at his side.

The echidna began to flicker again, more violently this time. He noticed and was too distracted to dodge the electrified net that dropped from the ceiling. He cried out in shock once he was trapped, trying in vain to set himself free.

Sonic was a mixture of sympathetic and amused. "Guess that plan of his didn't work out so well, huh?"

"He would've been fine if he hadn't started flickering like an old light bulb," Espio pointed out.

Outside of the lair were Sonic, Amy, and Sticks.

"Okay." The blue speedster glanced at the girls, grinning. "Everyone ready to put the plan into action?"

"Yeah!" they chorused.

Sonic didn't waste any time in walking up to the entrance, determination set in his expression. When he got to the door, he knocked on it.

Shadow wasn't surprised to be disappointed. "Wow, Faker, you're even more lamer than I thought. You're supposed to force your way in."

"He's really emphasizing that he's a 'non-aggressor'," Spade said. "That's like telling a tree it's not a plant."

"I'm busy!" Eggman bellowed from inside. "Come back tomorrow!" Sonic clenched his fist as the human shouted at someone else. "Hey, you're my prisoner! You can't just disappear like that! Stop flickering!"

"Eggman's not curious at all by it?"

"It's my double, fox boy. Nothing rational goes on in his head."

"Alright, Plan B." Sonic backed up from the door until he was far enough away. Then he crouched and spin dashed right through the metal barrier like a hot knife through butter.

"Should've done that in the first place!" Sonic lightly admonished.

In the main room, Hat-Knuckles was locked inside of a cage with laser bars. Eggman was smug beside him. "Imagine the look on Sonic's face when he sees I have Knuckles trapped."

Amy rolled her eyes. "I don't think Sonic'll be too concerned because how long do we have left, Theo?"

"Less than four minutes."

"Yeah, he won't be concerned."

"You don't have to imagine, Egghead!" Eggman spun around at the sound of Sonic's voice. The hedgehog and his friends ran through a hole in the wall. "Cuz here I am!"

"Well, that was a bit of a letdown." Eggman complained. "I was expecting a bigger reaction. Maybe shock, outrage, perhaps even a little ennui!" He quickly recovered from the disappointment. "Anyhoo. Motobugs, attack!"

"Motobugs again?" Eggman couldn't fathom why his double didn't learn from his mistakes. He had someone held hostage, and yet he was going to sit back and let Sonic trash his cheap robots.

Gong scoffed. "He's basically just giving up on winning at this point."

More robots rolled out to target the heroes. Sonic was the first to move, spin attacking the closest motobug.

Hat-Knuckles watched its parts fly in different directions. "Look who broke down the wall." He side-eyed Sonic. "The non-aggressors."

Marine frowned. "Does he not want them to save him?

Sonic punched another bot, dusting dirt off his shoulder. "Dude, this is more of a rescue than an attack."

The echidna deadpanned at him. "Excuses are easy to manufacture, but hard to sell."

"Neither of them are wrong..." Silver mused. "But Sonic is more right."

Eggman looked at him, surprised. "Why is Knuckles talking like a fortune cookie?"

Sonic laughed, and Eggman ran an exasperated hand down his face.

"That's not Knuckles." Amy enlightened him. "It's his double from another dimension."

Comprehension flooded Eggman's expression. "Oh! That explains the hat. So you can tell them apart, great idea!"

"He's not fazed at all by this!" Eggman exclaimed.

"For something that hasn't happened before and shouldn't be able to happen from their perspective, they're acting like it's just another Tuesday." Anti-Tails remarked.

"Maybe it is?" Rouge suggested. "Like, they've dealt with many meteor showers, luck balance of the universe shenanigans, and being in each other's bodies."

"Thank-" Amy smashed a motobug with her hammer. "-you."

"Wait a minute." Eggman frowned. "There are multiple Knuckles in this dimension? That could cause some kind of catastrophic anomaly! I do not want a dimensional explosion in my lab! I just had the floors waxed."

Marine chuckled. "Nice to know that he has his priorities straight."

The doctor pressed a button on the cage, and the bars vanished. The heroes just looked at Eggman.

Silver blinked. "Ummm, aren't you guys gonna get him out of here??'

He glared. "So, what are you waiting for? Get him out of here!"

Sonic responded, "Well, actually the reason alternate dimension Knuckles is here is that alternate dimension Eggman shot him with lasers from alternate dimension octopus bot."

Eggman was amused. "That's so alternate dimension me!"

"He's so happy. Why is he so happy?" Eggman glared at the screen. He just lost! He should be wallowing in his failures and learning from his mistakes!

"Any chance we could borrow your lasers so Tails can send this guy back and prevent the destruction of...pretty much everything?" Sonic asked.

"Sure!" Eggman chuckled. "You should've just asked me in the first place!"

Maybe Amy shouldn't have doubted her pacifist twin. "Peacefully asking actually worked, who would've thought?"

Eggman thought for a second. "But I need them back by Thursday."

"What's happening Thursday?" Sticks inquired.

"I'm gonna attack your, uh..." Eggman's smile was fake. "I mean, I'm having a party."

"His pants should have burst into flames with how bad that lie was," Tails said.

Sticks made an 'I'm watching you' gesture with her fingers.

Everyone was gathered in Tails' workshop once more. The echidnas were standing on a metal platform with two machines aimed at him. The rest of the heroes were on the sidelines.

Tails was examining the control in his hands. "For this to work, you need to be touching." He glanced at the red anthros. "So, when I tell you to, bump fists."

Hat-Knuckles briefly waved. "Farewell, my new friends. I've learned much from this wonderful journey."

"Okay!" Tails raised a finger, and the echidnas got ready to fist bump. "Here goes!" The kit pressed a button on the remote. Nothing happened. He stared in disbelief before uttering, "Oops. Uh...forgot to change batteries." He zipped away.

An awkward atmosphere settled now, and elevator music started to play out of nowhere.

"Does anyone else feel weird here, even though we're not the ones in the room?!" Tails called out.

Everyone raised their hands, nodding.

After a couple seconds, Sticks glanced over to Amy. The pinkette simply shrugged.

"Awkward," Sonic ultimately drawled.

"Yeah, it's like when you say goodbye to someone, and then you both walk away in the same direction," Hat-Knuckles put out there.

"That is the worst."

"It's like you don't know whether to restart the conversation."

"I hope it never happens to me."

"Yeah."

"So awkward."

"I hate that."

Sonic, Tails, and Amy looked at each other and laughed.

Sticks frowned. "People always follow me."

No one couldn't come up with one instance when someone actually followed her.

Tails quickly returned. "All set!" Everyone sighed in relief as he pressed the buttons again. The machines started up, one glowing blue and the other red. "Bump!"

The echidnas got into position again, but before the lasers could go off, Hat-Knuckles had to say one more thing. "By the way, Sonic, you're much more capable in this dimension."

"Uh, thanks, I guess?"

He shifted his focus onto his double. "It was nice meeting you."

Knuckles smiled. "You're the handsomest fellow I've ever met!"

"Thank you, dimwitted version of me!"

They fist bumped, and the beams hit them at the same time. When the rays shut off, the alternate dimension Knuckles was gone. Nothing remained of him but the party hat he had worn.

"Cool!" Knuckles gushed. "Could I do that again if I rub my feet on the carpet and touch things?"

Tails shook his head. "No. No, you can't."

In the other dimension, Sonic was seen falling face-first into the sand.

Knuckles appeared beside him on the beach.

"Great. Now he can get back to his girlfriend."

Amy's eye twitched. "You're a monster, Carol."

"I try."

He was shocked at the condition of his friend, but a fond smile formed soon enough. "Here, buddy. Let me help you." With one tug, Sonic was back on his feet.

Sonic dusted himself off, grinning. "Aw, thanks Knux!"

Then they braced themselves for the horde of robots coming their way.

When the screen faded to black, Eggman inwardly celebrated because it felt like the episode went on for an eternity. He faced the extra echidna in the room, more than ready to decrease the number of annoying rodents.

When no one was speaking, Lucy played the next episode.