(About 2-5 minutes, before the janitor arrived to the lab coat room):

Rarity ran into the lab coat room, the room full of lab coats, used for the science classes. Sunset Shimmer then closed the door, to make sure that the janitor doesn't see Rarity. She was now alone in the room, while her friends where trying to cover her. Rarity leaned her head, toward the door, and heard many voices coming from outside, including the janitor, who has just arrived into the science lab.

"Finally. What are you girls doing in here?" Rarity heard the janitor asked curiously.

"Nothing." Pinkie said innocently. "By the way, how did you come inside?"

"I used my janitor keys of course." Rarity face palmed(but can't be seen, due to you know what) at Pinkie's question. "Pinkie, don't you know that every janitor has all the keys for Canterlot high?"Rarity thought.

"Why are you two girls blocking the door to the lab coats?"

"No reason." Sunset said, with an innocent smile.

"Are you hiding something? Did you mess up the room?!" Rarity heard the janitor said, she gasped, she knew the janitor wasn't really into secrets, especially secrets that involve hiding more dirt for him to clean.

"Oh no. If the janitor sees me as some floating clothes, he will tell Principal Celestia, and i don't wanna know what will happen." Rarity panically thought to herself. Rarity quickly made some thoughts, about what she should do, she also knows that the janitor can be quite hard to convince, to go away.

Rarity then found out the only way to get unnoticed. "Do i really have to take all my clothes off again?" She thought, but eventually sighed in defeat, knowing it's the only option again.

"Alright, but i better hurry." Rarity thought. She now began to quickly pull off her shirt, taking her shoes off, along with her stockings, pulling down her skirt, along with her panties, and finally unzipping her bra. She then stacked her clothes gently, but quickly together, and placed it beside the door side, where it's behind the opened door.

Rarity considered just standing still, until she noticed a familiar tall white man, with blond hair, walking past by a window. Rarity gritted her invisible teeth, at seeing the man.

"You! It's that ruffian i once had a crush on, until i saw who he truly is." Rarity thought, then she got an idea, knowing that she's invisible, she could actually take advantage of the situation.

"Maybe i could use my invisibility for a change." Rarity said, before carefully opening a nearby window, and crawled right through it. It was then, that the janitor was fed up with her friends excuses, and decided to just check anyway.

"Oh really. Let's find out." The janitor said, pushing himself in front of both Applejack and Sunset Shimmer, and opened the door, much to the others shock.

But to their surprise, the janitor didn't look either surprised, or shocked at all.

"I don't know why you were blocking the door, but i couldn't see anything around there." The janitor said.

"Nothing?" Pinkie Pie said, before getting shushed by the others. Pinkie quickly shut her mouth.

"Yes nothing. Now if you'll excuse me, i need to clean this place, including the lab coat room later." The janitor said, before turning away, and began cleaning the other things around.

Present:

The other Mane 7 has just ran out of the science class room, and were now crossing the school's hallways. They needed to find the still invisible Rarity, and fast, since the invisibility potion will mostly wear off in about 10 minutes.

"Girls, we need to find Rarity quickly." Sci-twi almost yelled out, but she didn't, since that would just bring too much attention towards them.

"But where? Rarity could be anywhere." Rainbow Dash pointed out.

"Ya don't have ta remind us Rainbow." Applejack said, with a dry voice. The two glared at each other.

"Well sorry for just pointing out something." Rainbow argued.

"Something very obvious yes." Applejack argued back. Sunset Shimmer then decided to break up their kindergarten fight.

"Enough! Both of you!" Sunset Shimmer said, while breaking up the two. "We're not getting anywhere at finding Rarity, with both of your bickering." She said, while silencing both Rainbow Dash and Applejack.

"Sorry Rainbow, i guess we have ta pull down our small fights." Applejack apologized.

"Yeah me too." Rainbow Dash also apologized. "But i'm still better in football." Rainbow Dash said with her prideful voice, the others however ignored it, they got more important matters to think about.

"The question is just, why wasn't Rarity still in the lab coat room?" Sci-twi said curiously. "There was actually little to no point, in going out of the window. The janitor wouldn't have seen her anyway."

"Maybe the janitor had a great sense of smell." Pinkie Pie said while giving her own theory.

"Or maybe Rarity saw something, that made her go out of the window before." Fluttershy speculated. That made the others look at Fluttershy's point, due to that being the most likely possible reason, why Rarity has left.

"But what exactly gave Rarity a reason to leave out of the window?" Sci-twi asked her friends.

"I may have a theory." Sunset Shimmer said, while pointing at a poster nearby, with a familiar jerk, called Blueblood in it.

"It's Blueblood. Rarity's ex-crush." Rainbow Dash said, while pointing at the Blueblood picture, she remembered the times where Rarity once tried to get his affection, but always got rejected in a very rude manner. And then for a year ago, Rarity saw who he truly was, and lost all affection towards him.

"I guess Blueblood must have walked past the science lab." Sci-twi speculated.

"Then that's where we can find Rarity." Applejack said, now knowing that Rarity must be very close to Blueblood about now.

"But where is Blueblood anyway?" Rainbow Dash asked.

They now read the part, below the poster, which says "Blueblood, tearing the animal shelter down today, to make a new Bloodtastic private spa.", the others were shocked and gasped at the poster.

"He can't just tear down the animal shelter. He needs Principal Celestia's permission to do that. And knowing her, Celestia would never agree to that." Rainbow Dash pointed out, about Blueblood's plans.

"Well, knowing Blueblood, that varmint probably doesn't care a hay about it." Applejack said, she knows that Blueblood wouldn't care less, about destroying things, to get what he wants.

"Uhhmm... girls." Pinkie Pie said fearfully. She pointed at the Fluttershy, who was standing still like a rock, and then her eyes begins to twitch angrily.

"Uh oh." Pinkie Pie said, with fear in her voice. The others began to get sweat drops, at seeing Fluttershy beginning to get more, and more angry.

"Nobody, TEARS DOWN THE PRECIOUS ANIMAL SHELTER! And gets away with it." Fluttershy angrily said, while a fiery looking aura covers her, and images of flames burning through her eyes, the others(even Pinkie Pie) began to get a little scared of Fluttershy's temper.

"What are you waiting for? LETS GO AND SAVE THE ANIMAL SHELTER ALREADY." Fluttershy yelled out to them, surprising the others. All of them then begins to run over to the animal shelter, with Fluttershy getting a little head start.

The invisible Rarity, was now walking through the Canterlot high's backyard, she was hiding behind some bushes, seeing someone she really hates. None other than Celestia's nephew himself, Blueblood.

"Blueblood." Rarity said with venom in her voice. She walked closer, and begins to hear Blueblood's conversation with a construction worker.

"You heard me alright. Tear down the animal shelter!" Blueblood harshly said to the construction worker. Rarity gasped in shock, Blueblood has done many bad things in the past, but now tearing down the animal shelter takes the cake.

"But Blueblood, the animal shelter is very important to others. And Principal Celestia says that the animal shelter is so lovable, that she has decided to let it stay." The construction worker pointed out, but Blueblood ignored him.

"When i say tear the animal shelter down. Tear it down!" Blueblood harshly commanded the worker. The worker eventually begins to bring out his toolkit.

"I can't allow Blueblood to do that. I must stop him. But how?" Rarity asked herself. She looked around, and saw a pile of mud, which actually gave Rarity an idea.

"Now it's both save animal shelter time, and payback time." Rarity said, with a slightly mischievous voice. The invisible Rarity walked closer, and closer to Blueblood.

"Perfect. Once this pathetic shelter is teared down, i can finally open my private spa, just for me." Blueblood said with his usual selfish attitude. Blueblood however doesn't know, that the nude and invisible Rarity was right now, in front of him.

"This is for using me as a shield, back in the school party last year." Rarity thought, right before she pushed Blueblood, right down to a mud pool, which of course ended in a...

"SPLASH!" It said, now Blueblood's clothes was completely covered in mud, much to his disgust.

"NO! My perfect suit is ruined." Blueblood whined. He then glared at the construction worker, who was about to hammer the animal shelter.

"YOU! You did this on purpose!" Blueblood angrily blamed the worker, who in respond was quite confused at being accused, and also snickered at Blueblood being covered in mud.

"Me? What did i do?" The worker asked curiously, while trying to hold back his laughter. Blueblood then started to run off.

"I so need 5 baths for this. And then wash my clothes in the finest soap, for the next 6 hours!" Blueblood angrily said, while storming off. The construction worker now begins to pack away his toolkit, and hammer.

"Well, i guess the animal shelter stays anyway." The construction worker chuckled, while he begins to walk away.

Rarity while behind some bushes, was snickering at Blueblood's "accident".

"That's what he gets, for being so rude to me." Rarity said. But then, her invisibility wore off, and Rarity was visible again.

"Oh no. The invisibility wore off! Well at least it can't get any worse." Rarity said, but then much to her dismay, she hears some other students coming near the animal shelter, which she was close to right now.

"I just had to say that, didn't i?" Rarity angrily said to herself. She ran over to the bushes, and covered herself there from anyone.

The rest of the Mane 7 was running over to the animal shelter, to try and stop Blueblood, from tearing down the shelter. But on their way there, they cross paths with a running Blueblood, covered in mud. None of them, could hold back their laughter that well. Blueblood heard it.

"Shut up, commoners!" Blueblood angrily yelled out, with his usual insult, towards others he deemed inferior. The 6 girls were glaring at him.

"We won't allow you to tear down the animal shelter." Sci-twi angrily confronted him.

"We don't care if you're making a spa, the animal shelter needs to stay." Fluttershy said, also angrily.

"Yeah. So back off Blueblood." Rainbow Dash said.

"Forget the spa. I got pushed to a pile of mud, and needs to wash it off." Blueblood angrily said to them.

"Who pushed you?" Pinkie Pie asked him.

"Probably that so called construction worker. Now if you'll excuse me, i need to take 5 baths today." Blueblood said, before storming off again.

"Oh by the way. Nice improvement in your outfit." Rainbow Dash yelled out to him, while laughing, and so did the others, at Rainbow's compliment.

"Sh... Shut up!" Blueblood screamed to them, before storming completely off.

"Okay, now we know what Rarity's been doing. Now we can find her, and give back her clothes." Sunset said, while the others nodded in agreement.

All of them now arrived to the now safe animal shelter, much to Fluttershy's relief. They then heard a whispering from the bushes.

"Psstt... Girls... Over here." They heard a familiar whispering, and walked over to the bushes, seeing the now visible Rarity.

"Hey Rarity, nice job in teaching Blueblood a lesson back there." Rainbow Dash happily said to her formally invisible friend.

"Thanks. Now can i have my clothes?" Rarity asked.

"Right here Rarity." Applejack said, while taking Rarity's clothes out of her backpack. Applejack handed them over to Rarity, so she could take them back on.

After a few minutes, Rarity had her clothes back on.

"Ahh... Fully clothes again." Rarity said happily, now that she's fully clothed again. Then Sci-twi thought of something, she has forgotten to ask Rarity.

"Hey Rarity, i forgot to ask, but what happened to the potion you took?" Sci-twi asked.

"Well... I threw it out in the trash." Rarity said. Much to Sci-twi's shock.

"What! This can't be good."

"Don't worry, it's just in the trash can. And it was gone when i looked after it yesterday. It's most likely been thrown away." Rarity said, which Sci-twi calmed down in respond.

"I guess that's true. Come on Rarity, let's get back to class." Sci-twi said, with her friends nodding.

Rarity then joined her friends in their walk back to class.

Author's Notes:

That's the chapter for now. Enjoy it.