Disclaimer: I don't own the Loud House

5:00 pm at the Loud house, Luna was tuning her acoustic guitar in the living room. Leni appeared in the scene looking for something. Luna noticed and shrugged because she didn't mind at first…until Leni searched around the couch that she was sitting on. She asked, "Uh, Leni, can I help you with something, dude?"

Leni answered, "I need to look for a book to read for my 2nd period class, but Lily's using all of them for a castle.

Lily is seen building indeed, a castle made from books in her room.

Leni looked under the chair and pulled out an orange book with an Ace Savvy symbol on it, "Ooh, here's a book, and this fuzzy chocolate bar."

"I'll take that," Lana said, popping out, eating it and leaving the room.

Leni opens the book and reads for a bit, "Wow. The main character's name is Lincoln, and he's got ten sisters. Lori, Leni, Luna…"

This got Luna's attention as she heard those names before. "Hold up," she gets up and walks to Leni, "Let me see that," Luna takes the book and reads it. She's shocked at what she read, gasps and quickly closes, "Not a book, dude. This is a diary; Lincoln's diary. You can't read this," she told Leni.

Leni realized what she's done, "O-M-Gosh. You're right; I would never invade his privacy like that." Leni considered putting the dairy back where it was, "Although, I do wonder what his deepest secret was."

"Deepest secret?" Luna repeated.

Leni shows her as Luna reads the part, "I could never tell my family that my deepest secret-"

All the sudden, the sisters heard the doorknob rattling. "Huh, where's that key?" Lincoln talked to himself outside.

Leni and Leni panicked as Luna quickly puts the diary back under the chair. "Quick, split up!"

Lincoln comes humming and fetching the diary and goes upstairs. Luna pretended to play her guitar, while Leni was hiding in a picture frame.

Once the coast was clear, Luna meets up with Leni at the staircase and sighs relief. "Too close for comfort, dude."

"I know. He would be so upset if he knew we read his diary," Leni pointed out.

"Actually, you found it first," Luna remarked.

Leni frowned at her, which made Luna change her mind, "Okay, so we both read it. But accidents happen, as long as we don't snoop more into it, we're in the clear."

Leni agreed, "Yep. No matter how deep that secret is."

Both girls had second thoughts on said secret.

The next day, "Bye guys, I'm off to Gus' Games and Grub. I'll be back by 3." Lincoln said leaving his room.

The front door closed, Prompting Leni and Luna to come out of their rooms. Once they're inside Lincoln's room, Luna said "Okay, let's find the diary before he comes back". The girls started to search when…

"Ahem?" A voice came from behind. The girls turned around as it was revealed to be a suspicious Luan and Mr. Coconuts. "Uh, hey Luan. Whatcha doing here?" Leni nervously asked.

"I came here to borrow one of Lincoln's empty notebooks for my jokes," Luan answered, "What are you two doing here?"

The girls looked nervously at each other. Leni lied, "Umm…cleaning his room."

Luan confessed, "I overheard. You're looking for his diary." Leni and Luna looked guilty as Luan continued, "Guys, that is way wrong. Why bother?"

Mr. Coconuts jumped in, "Psst, Luan. What if your bro's got some big juicy secret. Don't you dare know what it is?"

Luan reconsidered, "Oh fine, I help you guys look. Luna, check that top drawer."

Luna does so and a giant water balloon explodes in her face much to her annoyance, "Seriously, dude?

Luan sheepishly said, "Sorry, can't resist."

"Found it," Leni said as she pulled the diary out from under his mattress. The girls read it as Leni picked up where she left off. "I could never tell my family that my deepest secret… is that I cutted class to see a R-rated thriller movie." The girls and Mr. C. gasped horrified at the entry.

Lincoln's voiceover and flashback:

Math was so boring, so I snuck out with Riley. She stole Principal Huggins' golf cart and we both took off to see that movie. So worth it.

Lincoln and a red haired punk girl in a leather jacket took off in said golf cart.

End flashback:

Luna vented, "I can't believe little bro would go so low as skipping School!"

Leni added, "Not to mention this Riley girl. She sounds like a terrible influence on him. We need to talk to him."

"No, we can't," Luan objected, "Because Lincoln will know we read his diary."

Luna proclaimed, "Let's just agree to put this away, and act like nothing happened. Deal?"

"Deal," said Leni and Luan, while Mr. Coconuts huffed.

Later in the afternoon in the living room, Luna strummed her guitar when she noticed Lincoln rubbing his left arm as if it were pain. "Hey Linc, you good?"

Lincoln looked up at her, "Uh…sure. Lynn probably gave me one too many punches." He gets up and leaves to go upstairs with his diary. Luna is left with a hmm.

Lincoln shortly leaves his room as Luna snuck in, grabs his diary, and quickly takes it back to her and Luan's room. She opens and reads…

Lincoln's voiceover and flashback:

Dear diary, I finally did it! I got that dragon tattoo I wanted!

Riley approves of a green fire-breathing dragon tattoo as Lincoln laughed.

End flashback:

Luna was overwhelmed with fear after reading the entry. Her voice slightly broke, "Little bro, why?"

Later that night, a tired Luan was heading upstairs with a water glass when she saw a familiar shadow that had a cowlick walking in the moonlight. She gasped and hid under the dining room table. The door closed as she peeked from underneath the table cloth. She saw two feet walking right by her; instantly recognizing those red-striped, white sneakers. Luan peered out as she saw Lincoln go upstairs, wondering where he was.

The next morning, Lincoln tiredly heads inside the bathroom, rubbing his eyes. Luan saw the coast was clear and in-and-out she went with his diary in hand into her and Luna's room. She and Mr. C opened it and read Lincoln's last entry…

Lincoln's voiceover and flashback:

Tonight was so awesome! Instead of studying for my tests, I went to this epic party thrown by Riley at her place.

Lincoln shouted, "Best! Night! Ever!."

End flashback:

Like Luna, Luan couldn't believe what she read. "What's happening to him?" She asked her puppet partner as he shrugged.

As the day passed, Lincoln was helping his parents with the garden; planting tulips. Luna and Leni watched from the latter's bedroom window.

Luna scoffed, "Lincoln's two-faced. He's fooled the rents with his goody two shoes act."

Leni thought differently, "Maybe he turned a new leaf?"

Luan frantically bursts in the room, "Guys, you better check out Lincoln's latest diary entry! It's a night of madness." Luan shows a photo of the entry on her phone to both girls.

"It's fuzzy, dude," Luna said as she couldn't tell what it said.

Luan was frustrated, "I panicked, but I remembered what it said."

Lincoln voiceover:

Dear diary, tonight Riley and I commence Operation: Mad rebel. First; we fill the fountain with chocolate syrup. Second; we release a herd of pigs from the petting zoo. After that, start some fights at Brawler's. And finally, rearrange the School sign to spell "Yellow doo".

End flashback:

The girls are horrified by the actions their brother planned.

"Vandalism?! Okay, bro's gone too far!" Luna exclaimed.

"Tonight could ruin Lincoln's future! We have to tell Mom and Dad!" Leni added frantically.

"But Lincoln will hate us; for snitching and reading his diary," Luan explained.

"Then we'll have to make sure he doesn't take those chances," said Luna.

"Umm, Luna, this is Lincoln; as in "the man with a plan" we're talking about here," Luan reminded her.

"True, but we gotta interfere; for our bro's sake," Luna said, "And I think I know how."

That night, The girls and Mr. C wore ninja costumes and had their bikes on them.

"Okay dudes, we know bro's schedule, we just have to be a step ahead of Lincoln without him knowing," Luna informed the group.

"Cool!" Leni cheered.

"Nice!" Luan added.

Mr. Coconuts went, "Where's the zipper? How am I gonna go in this garb?"

Luna was annoyed, "Did you really have to bring him along with you, Luan?" Then she realized that's not her concern, "What am I saying? Let's go!"

And the group takes off as they made Their first stop and came out of Flip's with a giant barrel of syrup. "Nice work, brahs, now Lincoln won't dump this in the fountain."

"Yay!" Leni squealed and realized, "Wait, so what do we do with it now? I forgot to bring ice cream." She asked.

"Throw it away?," Luan hesitantly suggested, knowing she liked chocolate.

"No dudes," Luna objected, "Never waste good chocolate."

The girls and Mr. C take off to their next destination as the syrup splattered Luan and Leni to which the latter tasted. "So yummy. You don't need ice cream."

The group arrived at their 2nd stop; the petting zoo. "Okay dudes, let's open the pig pen so Lincoln doesn't release them." The girls opened the pen and pigs ran wild. The girls struggled to catch them.

"Get back here," Luan commanded.

"These pigs are faster than I thought," Leni commented.

Luna had an idea, she took out her phone and called…

"Hey Lunes, what's up," greeted Sam.

"Sam, what's your tip on wrangling pigs?"

"Easy, find something tasty and lure them in someplace safe so they stay there."

"Thanks brah. You're the best. Bye." Luna hangs up the phone and she grabs the barrel of chocolate syrup she picked up from Flip's and leaves a trail to an animal container. The pigs licked the chocolate and followed suit. Once they're in, Luna closes the gate.

Bicycle bells alerted the group. Luan warned, "Lincoln and Riley at 6! Hide!"

The group takes cover as Lincoln and Riley arrive at the scene. "Hey, where are the pigs?" He noticed. Lincoln and Riley leave as the group quietly high fived each other.

3rd stop was Brawler's biker club. Leni felt sick to her stomach, "Yikes. This looks rough."

"No kidding," Luan pointed to the sign, "Open for badness. Do we go in?"

"Heck No!" Luna answered without hesitation. "We turn out the sign so bro will think it's closed."

Leni managed to unplug the sign from the back as the lights went out. "It's out."

Their success was short lived as a male and female biker came out of the parlor. "Hey! Nobody touches our sign!" went the female.

Mr. Coconuts took a sniff, "Whoo. Doesn't smell like a bar of soap in there, that's for sure."

The bikers felt insulted, "That puppet insulted our personal hygiene. Get them!"

The group panicked and took off. They eventually managed to lose the bikers.

"That was close," said Leni

"At least Linc won't have anymore bikers to rumble with," Mr. Coconuts commented.

Luan had enough, "Now now Mr. C. You're in a time out," she said, shoving him down in her bike basket.

Luna spoke, "Alright, we just have to Linc's School before he does,"

"Too late," Leni said, spotting Lincoln trying to pull off a letter at the School sign and a tough looking groundskeeper.

"Let's go before we're busted for trespassing," said Luan.

"No, we gotta save Lincoln," said Luna.

"But he'll know we read his diary," Leni warned.

"We don't have a choice, c'mon."

The group ran towards him as they shouted, "STOP!" Mr Coconuts added, "Don't throw your life away."

The voices caught Lincoln's attention as he turned around, "What are you guys doing here?"

They confessed, "We read your diary."

"YOU DID WHAT?!" Lincoln was furious as he marched towards them.

Leni explained, "We're so sorry for invading your privacy like that, but we couldn't let you ruin your life."

Lincoln suddenly switched from angry to laughing his head off. "Duh! I knew you guys were peeping in my diary. That's why I made up the whole 'gone rebel' act."

"Say what?!" The girls were shocked.

"It all started the other day, when I came back from Clyde's House."

Flashback:

Lincoln comes humming and fetching the diary and goes upstairs. Luna pretended to play her guitar, while Leni was hiding in a picture frame. To his surprise, he finds a strand of blonde hair in his diary. He also overhears…

"Too close for comfort, dude," said Luna.

"I know. He would be so upset if he knew we read his diary," said Leni.

Lincoln was shocked at what he heard.

End flashback:

The group looked at each other with guilt. Lincoln explained, "So I tore out my real last entry, and wrote that fake story about skipping School."

"And the tattoo?" Luna asked. Lincoln pulled up his shirt sleeve to show them it's clean.

"Well, what about sneaking out to parties?" Luan asked next.

"I never snuck out," Lincoln told her, "I just pretended to sneak back in."

Flashback:

I climbed out my bedroom window and went out back. Then I walked in the moonlight to the house, casting my shadow. I saw you taking cover and that was my cue to walk inside.

End flashback:

Leni finally asked, "Well, what about this Riley girl?"

Riley comes out and takes off her "hair" and jacket, revealing…

"Stella?!" The girls saw who it was.

"Sorry guys," Stella fooled them, "I had to help him out."

"You guys know I would never do any of that bad stuff, right?" Lincoln asked, "This was all just a ruse to get you to fess up to reading my diary."

"Sorry we doubted you, bro" Luna apologized.

"It's cool you guys," Lincoln forgave them, "And I'm sorry for putting you through all that to teach you a lesson."

The groundskeeper spotted them, "Hey! What are kids doing here?!"

"Busted! Let's run!" Lincoln told the group.

The kids rode their bikes as Mr. Coconuts asked Lincoln, "So Linc, what's that secret you were referring to? Graffiti? Secret piercing? Do you owe money to-"

Lincoln gets annoyed and tosses him in a trash can.

The end.