Harry switches with Voldemort. Ron switches with Bellatrix. Hermione switches with Draco. Neville switches with Lucius. Luna switches with Dumbledore. Weasley twins with Cedric and Fleur. Remus switches with Lee Jordan. Ginny switches with Tonks. Dobby switches with Hedwig.
Arthur Weasley switches with Umbridge. Molly Weasley switches with Narcissa. Amelia Bones switches with Mad eye Moody. Sirius switches with Snape. Minerva switches with Flitwick. Hagrid switches with Sprout. Percy switches with Fudge. Kingsley Shacklebolt switches with Rodolphus Lestrange. Peter switches with Greyback. Dean switches with Crookshanks. Seamus switches with Nagini. Bill Weasley switches with Buckbeak. Charlie Weasley switches with a Dragon. Pansy switches with a Centaur. Cho switches with Aragog. Madam Pomfrey switches with Fang.

Just letting you know who's who! -Traveler and SuperSentai199

(Neville's P.O.V.)

"Dumbledore! Snape! What the hell is going on here!?". We all said at the same time while I held Harry in my arms. "Well, lately, I've been working on a way to...", Snape explained.

(Harry's P.O.V.)

I had been woken up by Neville, and I was still in shock at how we all switched bodies, I mean...I am in Voldemort's bloody body!

We all were in the room where Snape said that the accident happened. I saw that Fred and George switched bodies with Cedric and Fleur, with Remus switching bodies with Lee Jordan while Ron's father had switched bodies with Umbridge.

Minvera had switched bodies with Flitwick, with Hagrid switching bodies with Sprout, and it's going to take a while to remember who is who. Everyone from the order of the Phoenix were here as well.

"You alright, my love?", Neville whispered, and there was a tone of awkwardness. "I am alright.", I whispered softly, a sigh escaping me.

"I'm sorry, Harry...it's just a bit odd for me to get used to seeing you in Voldemort's body.", Neville whispered with concern. "Don't worry, my love, everyone is feeling the same.", I said with a nod.

"Well, explain now, Snape.", Molly said with a sharp glare, and she was in Narcissa's body. "I've been trying to recreate this powerful healing potion which is said to heal any type of curse.", Snape said as he had a magic chalkboard showing us images.

"What is that potion's name?", Hermione asked in curiosity. "It is called the Elixir of the Phoenix.", Snape replied softly with a well-known glint in his eyes.

"Well, I had managed to find the right ingredients, and I was spending the last few days trying to make sure that I got the potion right.", Snape explained with a exhausted sigh.

"But if you had the right ingredients, why did this happen?", Tonks asked in confusion. "Because only after I had put in the ingredients in the cauldron, I realized that someone had mixed up the names on the bottles.", Snape said with a glare to Fred and George.

"Seriously?! It was you two!?", Ginny said with a growl. "Me and George thought it would be funny, but we planned for the professor to do this during class.", Fred said as he grinned.

"You two are so grounded! When this is all back to normal, all of your pranking stuff will be taken away!", Molly shouted with fury. "But Mom!", Fred and George said with horror.

"No Buts! Your mother is right! No pranking for an entire year!", Arthur said angrily which felt so odd to see him in Umbridge's body. "Well, now we know the source of the accident.", I said with a nod.

"But if Snape didn't recreate that healing potion, what did he create?", Cedric (Fred) asked in curiosity. "I ended up created one of the most dangerous potions in all of wizarding world history, it was so dangerous that the Ministry banned it from ever being used.", Snape said with a grim frown which looked so weird on Sirius.

"What was that potion's name?", Luna (Dumbledore) asked quietly. "I believe it was called Tonic of Broken Minds. Severus, please explain what the potion does.", Dumbledore (Luna) said steadily.

"It is so powerful that it is able to affect people to change in surrounding areas and beyond. The signs were of energy waves, rumbles in the earth, and white flashes.", Snape said as he showed on the chalkboard what the potion does.

"So it sent energy waves throughout England and Scotland?", Hermione asked in surprise. "Yes, but the good news, it only affects those in the wizarding world.", Snape said with relief.

"That's good news.", Remus said with a sigh of relief. He was right. I couldn't imagine how much chaos would have happened if the non-magical world was affected as well.

"That does explain why we switched bodies with Voldemort and some of his Death Eaters.", I said in wonder as I stared at my fingers.

"Okay, so now that we know what happened, Snape just needs to recreate the potion to turn us all back to normal, right?", Sirius (Snape) asked hopefully.

"Only problem is that I no longer have the ingredients needed for the potion, and I need to search for more and the worst case is that they are hard to find.", Snape (Sirius) said with a frustrated sigh.

"Oh, great.", Tonk (Ginny) said with a deadpan look. "We will help.", Molly (Narcissa) said with a determined look.

"Another problem is that I will need help to organize all the names of potion ingredients. Since you two started this, you will be helping me with finding the ingredients, and organize the names of the potion ingredients." Snape said with a glare.

"What!?", Fred (Cedric) and George (Fleur) said. "Oh, this is great.", Ron said as he laughed.

"I'm sorry, Fred and George. But since you got us all in this mess, you will help Snape, and you better not try any pranks on him.", Molly said in a stern tone.

"Yes, mother.", Fred (Cedric) and George (Fleur) said with their heads down. Then we heard a noise coming from somewhere. "It's a floo call!", Dean called out.

"Hello? Who is it?", Seamus asked. "I can't get it to work!", Seamus said with a groan.

"I'll handle it!", I said with a nod. Then we saw Percy appear. "Help, we have a situation in the Ministry!", Fudge's voice came from Percy.

"Minister Fudge?!", we all shouted in shock. "We know, Minister. We all swapped bodies!" Dumbledore said.

"Who is that?!", Fudge asked in horror as his eyes widened. "It's Harry! He switched bodies with Voldemort.", Sirius (Snape) said with a smug smirk, knowing that Fudge will finally see the truth.

"Voldemort?! You mean he is back?!", Fudge cried out in horror. "Yes, that's what I've been trying to tell you all!", I said with a frustrated growl.

"You know, Harry, it's kind of scary seeing you angry like that.", Hermione said with a wince. "You all refused to believe me, and thought I was lying.", I said, giving Fudge a nasty scowl.

"We're sorry, Potter!", Fudge said with a apologetic look. "Enough about this, you said that everyone at the Ministry switched bodies as well?", Mad eye asked in curiosity and a gleeful look.

"Yes, and I'm afraid it's not just us at the Ministry.", Rodolphus Lestrange appeared, but Kingsley's voice came from his mouth. "Kingsley Shacklebolt?", Remus asked in shock and horror.

"Yes, it's me. Like I was saying, it's not just us who switched bodies, all of the Wizarding world did! It's chaos everywhere!", Kingsley said with a weary and exhausted groan. "Oh, great.", Neville huffed with a frown.

"To make it worse, someone's taken advantage of the confusion, and robbed Gringotts bank.", Kingsley said. "I can already guess who it was.", I said with a half-roll of my eyes.

"They have robbed Gringotts?", Fudge asked in horror. "Yes, Minister.", Kingsley said with a nod. "Oh, this is terrible.", Fudge said with a sob.

"Well, who did it?", Ginny (Tonks) asked curiously with a hint of frustration. "We don't know. With everyone switched, no one can figure out just who is who, making the situation worse!", Kingsley said with a frustrated groan.

"Not to worry, we'll take care of it!", I said with a grin. "Yeah!", Ron said with a wide smile. Hell, Bellatrix with Ron's voice is bloody freaking me out a little!

"Oh, no, you won't, you kids are too young to handle this problem!", Molly said with a stern expression. "Molly is right. You won't be able to tell who is who, and you can get hurt.", Dumbledore (Luna) said with a nod.

"But if Voldemort and his Death Eaters are taking advantage of the confusion, he could easily conquer the wizarding world.", Hermione said with a sharp and anxious look.

"Hermione's right. If we don't act fast, all could be lost for the wizarding world.", I said with a grim yet determined nod. "We won't let that happen.", Ginny (Tonks) said with a determined glint in her eyes.

"Well, alright then, you all can go.", Dumbledore (Luna) said with a resigned sigh. "Yeah!", We all said with a cheer.

"But as long as some of the Order of the Phoenix accompany you.", Dumbledore (Luna) said with a stern look, and we nodded, accepting the condition.

"Sirius, Tonks, Mad Eye, and Remus, accompany the children, and don't let them out of your sight.", Dumbledore (Luna) said with a sharp, almost scary-like stern look.

"Yes, sir!" Sirius (Snape) said with a salute. "Snape, start working on a way to switch us all back, the sooner you fix this, the sooner we can stop Voldemort.", I said with a nod.

"Agreed. The rest of you that are staying, I will need your help in finding the ingredients for the potion.", Snape (Sirius) said. "Can we eat first? I'm hungry.", Ron said with a sigh, looking a tad lost in daydreaming about food.

"Seriously, Ron! We have to stop Voldemort first, and all you can think of is food?!", Hermione said with a resigned huff. "Let's go clean up and change first, and then we can go have something to eat.", I said with a smile.

"Right.", Neville said with a nod. "Come on!", Cedric (Fred) said with a grin. "Wait for me!", Seamus said as he slithered.