It begins with J.D. and Varie at the Loud House watching cartoons in the living room with Lincoln, Laney, Lily, and Jessie, and Laney is reading a book.

They then laugh at a funny moment on the show.

"Boy, he sure got hit hard," J.D. chuckled.

"Yeah," Lincoln agreed. "That coyote just won't quit going after that roadrunner."

"Yeah," Lily agreed. "What a goof."

A whooshing sound was heard, and a strange light appeared on the ceiling.

"What is that?" Varie wondered.

The light transformed into a strange portal, and out came a girl with white hair like Lincoln's, with a hair clip in it, dressed in an orange summer shirt and a denim skirt, and she landed on the rug in front of the TV.

J.D. gasped when he saw her. "Lincoln! That girl looks like a female version of you."

Lincoln stared at the girl and said, "Yeah, she sure does."

"Where am I?" the girl wondered.

"You are in the Loud House," J.D. explained.

When she sees Lincoln, she screams. "You look exactly like me!"

When they heard the scream, Eddy and the girls ran downstairs.

"What's all the fuss about?" Eddy asked.

"Who is that here?" Lori asked when she saw the girl.

"And why does she look like a female Lincoln?" Lola wondered.

"That's what Lincoln and I were wondering," J.D. explained.

"Oh, I'm sorry," the girl apologized. "My name is Linka Loud."

"It's a pleasure to meet you, Linka," J.D. said, before introducing himself, "I'm James Knudson. But you can call me J.D."

"I'm Varie. J.D.'s fiancé."

"My name is Eddy. I moved here from Atlanta with my friends Ed and Edd. We call Edd "Double D."

"It's a pleasure," Linka said politely. "You all look like female versions of my 11 brothers."

They were shocked to hear that.

Laney was taken aback and exclaimed, "11 brothers!?"

"You're from a flipped gender universe," J.D. realized.

Linka shrugged. "I guess so."

Lori introduced herself first. "I'm Lori Loud, and it's a pleasure to meet you, Linka. Who is your brother version of me?"

"His name is Loki, and he is the oldest," Linka explained.

"He's named after Loki, the Norse God of Mischief," J.D. explained.

Linka nodded. "Yes. That's right."

Leni went next. "I'm Leni Loud. It's totes a pleasure. Who's my brother?"

"His name is Loni," Linka replied.

Luna went next. "I'm Luna Loud. Pleasure dudette. Who's my brother?"

"His name is Luke, and he has a mohawk hairstyle," Linka explained.

Luan went next. "I'm Luan Loud. Who's my brother?"

"His name is Lane, and he's also a jokester," Linka explained.

Lynn went next. "I'm Lynn Loud Jr. and I guess we share the same name."

Linka nodded. "Yes, and the love of sports."

"My name is Lucy Loud: Is your brother's version of me a goth as well?" Lucy asked.

Linka nodded. "Yes, but his name is Lars."

Laney went next. "My name's Laney Loud. Who is my male version?"

"His name is Larry, and he's shy and quiet," Linka explained.

Lana went next. "My name is Lana Loud. Who's my brother version?"

"His name is Leif, and he likes to be filthy," Linka explained.

Lola went next. "My name is Lola Loud. Who's my male side?"

"His name is Lexx, and he likes to play rough and clean," Linka explained. "He also has a camouflage car."

Lisa went next. "I'm Lisa Loud, and it's a pleasure to make your acquaintance. Who is my male counterpart?"

"His name is Levi, and he, too, is a scientist," Linka explained.

Lily was up next. "My name is Lily, Loud. Biologically, I'm 15 months old, but because of special circumstances, I look like I'm 10-years-old. Who is my counterpart?"

"His name is Leon, and he's only a baby," Linka explained.

It was finally Lincoln's turn to introduce himself. "My name is Lincoln Loud, and I am the only son. I guess you and I are very similar."

Linka nodded in agreement. "Yes, Lincoln, we are. Claudia is my best friend, and I am the only daughter."

"Sorry to interrupt, but is that a female version of Clyde?" Varie asked.

Linka nodded. "Yes, she is. I like reading comics, playing video games, and peace and quiet."

Jessie smirked. "You and Lincoln have a lot in common. Sorry, my name is Jessie Bannon. I'm also from another dimension."

Linka blinked. "That's interesting."

"If I may ask, how did you get thrown into that portal?" J.D. asked.

Linka sighed and explained, "My brothers were all fighting over a baseball card."

Varie cocked her head, perplexed. "A Baseball Card?"

"Why fight over something so petty as that?" Laney wondered.

"It started with Loki and Loni getting the same card," Linka explained, "a 1954 Ted Williams."

"I'm not into baseball cards," J.D. admitted before quickly adding, "No offense Lynn, but that card is worth $50,000.00."

Lola was in awe. "Wow! All that money for a baseball card?"

"Yeah," J.D. agreed.

Lynn gave J.D. a small smile. "None was taken, J.D. I don't collect baseball cards. I play sports."

Linka nodded. "Yeah. But the fight erupted into an Erupting Volcano, and they decided," she sniffles, her voice breaking, "to get rid of me for good!"

Laney came over to comfort Linka after she burst into tears.

"They had the Sister Fight Protocol, too?" Lori asked.

J.D. nodded. "In Linka's case, it's the Brother Fight Protocol. And that is far worse than an erupting volcano or DEFCON 1. That's what I call the Jonestown Massacre, or DEFCON 0."

"What is DEFCON 0?" Varie asked.

"It's something I made up," J.D. admitted. "It means there is no defensive readiness and everything has been destroyed."

"Technically, it's not a DEFCON level," Lisa explained, "but that is the correct way to put it."

Varie became determined at that point. "We have to help Linka."

Jessie agreed. "I know. But, like me, it's like looking for a needle in a haystack."

"Linka is now stuck here. "But don't worry, Linka," Varie assured her, "we will do everything we can to help you."

Linka wiped her tears away. "You..." she sniffs, "you will?"

J.D. smiled reassuringly at her. "Sure. That's what friends are for."

Linka walked over to J.D. and hugged him. "Thank you, J.D."

"You're welcome," J.D. replied with a smile.

At that moment, Lynn Sr. and Rita entered through the front door.

Lynn Sr. greeted everyone. "Hey, guys. We're home."

"Welcome home, Mr. Lynn," J.D. greeted. "We have an interesting development for you."

J.D., Varie, and Linka explained everything to them, and Lynn Sr. and Rita were shocked.

"That's horrible," Lynn Sr. said, shaking his head.

"What your brothers did was absolutely horrible," Rita admitted.

Linka nodded in agreement. "Yeah, but I feel happier here than I did at home."

J.D. then had an idea. "Let's take a look at what's going on. Watch." He recites an incantation. "Litiumou Sepuxui Kylmyysis!"

Blue fire formed a dimensional viewing window into Linka's Dimension, where they saw Lynn Sr. and Rita's counterparts crying as the older boys were taken away in police cars and Child Protection Services took away the younger boys, minus Larry and Leon.

"My brothers, minus Larry and Leon, are being taken away?" Linka asked, perplexed.

"Whoa," Laney exclaimed. "That's rough."

"This is probably what would've happened if we hadn't gotten rid of the Sister Fight Protocol," J.D. realized. "From what I can tell, me and Varie aren't in that dimension at all."

"Yeah," Varie agreed. "I can already tell this is going to be bad."

"You were right, J.D.," Lola admitted. "That protocol only made things worse."

"And not just for us, but for the entire neighborhood and our friends and relatives," Lisa added.

"And this version of you guys were fighting over a baseball card?" Lynn Sr. asked.

"Not just any baseball card, Mr. Lynn," J.D. pointed out. "It was a Ted Williams from 1954. According to 2016 standards, they valued it at $50,000.00."

"That's a lot of money for one little card," Rita observed.

"There's a difference between Loki & Loni and Lori & Leni," Varie explained. "Lori and Leni were fighting because they had the same dress. Loki and Loni were fighting because they both had 1954 Ted Williams cards. That's $100,000.00 for both cards."

"That's a lot of money," Laney admitted. "But I'm glad we got rid of the Sister Fight Protocol."

"Me too," Lily agreed.

Everyone agreed, and J.D. closed the window to the other dimension.

"By the way, J.D., could they see or hear us through that window?" Lucy wondered.

J.D. shook his head. "They couldn't, Lucy. It was a viewing window that allowed us to look into that dimension."

"Oh, I see." Lucy nodded in understanding.

Linka had become a member of the Loud Family in their dimension, and she and Lincoln now shared a room.

THE END