Back at the backyard...

Lucy and Lana sat nearby and watched as Lincoln and Ronnie got ready to fusion dance. "Okay, Ronnie, we better get this over with quick," Lincoln stated as he warmed up his sick dance moves. "Did you bring the boombox?"

"Lame-O, do you honestly think that when I came to your backyard, that I expected to be dancing with you?" Ronnie replied, warming up as well. "We'll just have to do without the music for now."

"I think I might have a boombox, if you actually need one," Lucy blurted, raising her arm.

"No offense, Lucy, but I really doubt your kind of music is going to help us fuse," Lincoln gently replied. "It'll probably work, but in the "creep the heck out of us" way."

Lucy crossed her arms and put on a pouty face, clearly angry, yet understanding, about the reply. "Well, why don't you just hum something?" Lana suggested with a shrug.

Not having any other options, Ronnie and Lincoln hummed to themselves as they started to dance. To say the resulting movements were rather... Awkward-looking, would be an understatement, but eventually, the duo managed to get more in-tune, with Lucy and Lana smiling at the sight.

And once they started dancing a bit closer to the rhytim, they performed a short Jazz-Tango dance before they promptly fused, unleashing a light so intense, that Lucy and Lana were forced to shield their eyes.

And once the light dispersed, the resulting fusion opened their eyes and stated, with Lincoln and Ronnie's voice in unison:

"Let's do this!"

Back at the Park...

Lynn, Luna and Luan laid on the ground while Lori, visibly exhausted, gave Chandelier a defiant glare.

"You can't fight forever, Lori," Chandelier stated, and unfortunately, they were right. "Once your stamina runs out, I'll figure out what the heck you are, and then gain that power for myself. Or maybe I'll just kill you, whichever comes first."

"You know, I figured that an Orthus would be twice the bite, not twice the bark!" Lori scoffed.

The fusion seemed legitimately dumbfounded at the statement. "...I...I honestly have no idea how to respond to that."

"How about you tuck your tail between your legs and go home?"

"I would, but I have no ta-" then Chandelier realized something. "Wait a minute, who's there?!"

Everybody turned around and saw the Lincoln-Ronnie fusion standing nearby, holding a fusion slayer in hand. Not only that, but the fusion's appearance was also visible.

They had slightly tanned skin with freckles on their cheeks, a rather prominent dual set of buck teeth, long black hair that eventually changed to a white color. For clothes, they had a purple-orange stripped sweater with blue jeans and white shoes.

"Okay, so, I was confused before, but now I'm even more confused," Chandelier remarked. "Who the heck are you? Lincoln or Ronnie?"

The fusion just chuckled. "I'm neither Lincoln nor Ronnie Anne, I'm the one who will destroy you: Linconnie," and then they aimed their fusion slayer straight at Chandelier. "Now leave my sisters alone and face me."

Chandelier, after taking a couple seconds to process what just happened, promptly walked straight to Linconnie and exchanged angry glares with them, all while Lori and the remaining sisters simply watched.

Then, without warning, the fusion slayers clashed.

"So, would it be embarrassing if I wound up kicking your butt as easily and efficiently as Lori did?" Linconnie inquired.

"Nah, I've gotten used to it-I mean, s-shut up!" Chandelier hissed in return.

The fight went on, with both fusions fighting evenly as Chandelier scoffed: "So, you're the latest in the line of fusions involving the Louds, that doesn't matter! Whether you're as unfunny as Luan, as noisy as Luna, as obnoxious as Lola, as dirty as Lana, as pretentious as Lisa, as gloomy as Lucy, as stupid as Leni, as aggressive as Lynn, or as oxymoronic as Lori-"

Then Chandelier pinned Linconnie to the ground and proclaimed, "I will strike you down!"

Linconnie, however, soon got back up and swung the fusion slaye up, starting to bisect Chandelier starting from the crotch. "Don't even think about it!" they angrily retort. "The power of fusion is something you'll never understand, because you refuse to give it a chance! Cooperation, tagging, relationships, fusion is that and more! That, is the power we Louds possess! And shall keep safe, with all of our might!"

Finally, the fusion fully bisected Chandelier, and they promptly exploded back into Chandler and Cristina, who were then sent flying into trees. Linconnie snapped their fusion slayer in two, then defused back into Lincoln and Ronnie as Chandler's fusion slayer hit the ground. Apparently the sword didn't fly alongside the boy.

So Ronnie and Lincoln took the sword as Lori approached them. Then, once she reached them, she gave them a stern look, crossed her arms... Then flashed a smile and hugged them both.

"I'm proud of you two," she said, rubbing cheeks with the kids.

"Thanks, Lori," Lincoln replied, returning the hug. "By the way, what even are you, for real?"

The teenager simply chuckled and answered "that will be left for another day" before everybody went home.