Harry Potter But AU?

Harry's POV

While the entire school was focused on the search for informations about the chamber of secrets for the next two weeks, there were three students who didn't care.

Harry, who knew everything they would learn in this research from his past life.

Luna, who when asked Harry about it he told her everything he knew about the chamber with the exception of it's entry point, as he didn't know how to explain him knowing it without making her a little bit suspicious about him for his knowledge.

And Daphne, who took on herself to learn biology as fast as she could in addition to potions so she could learn understand what Harry was talking about in their joined sessions.

As for working together, Harry didn't see the point in it.

Right now they needed more knowledge on the subjects of potions, spell crafting and microbiology with maybe alchemistry, and as he finished his theoretical biology master degree he used Halloween to go to the university after his lesson of blacksmithing to get microbiology books as he would put in postpone the medicine studies together with his physics and math studies.

'At least I only had half a year's worth of studying as I already learned the regular chemistry and biology in the studies in the degree' he thought as he saw the books he had to study for his new microbiology degree.

The other thing he put on a hold was his study on the 'Fidelius Charm' as he has no progress he decided to learn arithmancy as he hoped to not only that it would help him not only in creating spells as part on his deal with Daphne but also explain to him why does specific wand spells control magic in a specific way and how does magic can affect souls.

Ron's POV

Ron had a new plan.

Last year was great, it started by him becoming best-friends with the boy who lived, and although he still wasn't known as his own person, he left the Weasley's youngest boy stigma.

As the year past, he had adventures of his own.

He helped Marcus beat a troll, and beat McGonagall's giant chess game.

Him and his friends created their own group that everyone called the golden group, Marcus as the Hero, Hermione as the smartest witch of her age, Neville as the herbiology prodigy, and him as the strategy man.

He became a hero on his own, and he was sure he would be known for it, yet somehow, as this year started, he once again became known as the sidekick of the boy who lived.

And he feared this year would be with no adventure, which was why, even though everyone else were afraid, he was only excited about finding the chamber, and he knew who must be the one who did it-Malfoy.

Now he just need to convince Hermione to help him do it, maybe drop a 'sudden thought' to Marcus about how Malfoy must be the heir of Slytherin after he a was in a tutoring with him?

November 17 1992

Marcus POV

Marcus was once again spending the night in the hospital wing, this time not because of an evil DADA professor but because of an idiotic one. In fact, he started to wonder if the curse in the DADA position isn't a curse against them but against him, how else do you explain someone with Lockhart's extensive knowledge do something like make his bones disappear?

He laid on the bed, unable to fall asleep with the itchiness the potion cause him and thinking about all of this, and about the plan to make a polyjuice potion he and His friends made, when he heard a large crack and an house elf was standing on his c.h.e.s.t, it took him a few seconds to recognize him as Dobby, the house elf who stole his letters during the first week of summer before he started talking with Neville and Ron in the fire place, after which he showed up in his room trying to convince him not to come to Hogwarts, before Marcus called binki, his personal house elf to kick him out.

"What are you doing here, Dobby?"

"Marcus Potter came back to school," he whispered miserably. "Dobby warned and warned Marcus Potter. Ah sir, why didn't you heed Dobby?

"If Marcus Potter only knew!" Dobby g.r.o.a.n.e.d, more tears dripping onto his ragged pillowcase. "If he knew what he means to us, to the lowly, the enslaved, we dregs of the magical world! Dobby remembers how it was when He-Who-Must-Not-Be-Named was at the height of his powers, sir! We house-elves were treated like vermin, sir! Of course, Dobby is still treated like that, sir," he admitted, drying his face on the pillowcase. "But mostly, sir, life has improved for my kind since you triumphed over He-Who-Must-Not-Be-Named. Marcus Potter survived, and the Dark Lord's power was broken, and it was a new dawn, sir, and Marcus Potter shone like a beacon of hope for those of us who thought the Dark days would never end, sir… And now, at Hogwarts, terrible things are to happen, are perhaps happening already, and Dobby cannot let Marcus Potter stay here now that history is to repeat itself, now that the Chamber of Secrets is open once more—"

"So there is a Chamber of Secrets?" Marcus whispered. "And did you say it's been opened before? Tell me, Dobby!"

He seized the elf's bony wrist as Dobby's hand inched toward the water jug. "But I'm not Muggle-born—how can I be in danger from the Chamber?"

"Ah, sir, ask no more, ask no more of poor Dobby," stammered the elf, his eyes huge in the dark. "Dark deeds are planned in this place, but Marcus Potter must not be here when they happen—go home, Marcus Potter, go home. Harry Potter must not meddle in this, sir, 'tis too dangerous—"

"Who is it, Dobby?" Marcus said, keeping a firm hold on Dobby's wrist to stop him from hitting himself with the water jug again. "Who's opened it? Who opened it last time?"

"Dobby can't, sir, Dobby can't, Dobby mustn't tell!" squealed the elf.

"Sir must go home! Dobby thought his Bludger would be enough to make—"

"Your Bludger?" said Marcus , anger rising once more. "What d'you mean, your Bludger? You made that Bludger try and kill me?"

"Not kill you, sir, never kill you!" said Dobby, shocked. "Dobby wants to save Marcus Potter's life! Better sent home, grievously injured, than remain here, sir! Dobby only wanted Marcus Potter hurt enough to be sent home!"

"Well, I didn't ask for your help, I don't need your help, and if you are unwilling to tell me about the chamber of secrets, stop helping me!"

Just as Dobby was about to answer, footsteps were heard by the both of them.

"Dobby must go!" breathed the elf, terrified. There was a loud crack, and Marcus's fist was suddenly clenched on thin air. He slumped back into bed, his eyes on the dark doorway to the hospital wing as the footsteps drew nearer.

Next moment, Dumbledore was backing into the dormitory, wearing a long woolly dressing gown and a nightcap. He was carrying one end of what looked like a statue. Professor McGonagall appeared a second later, carrying its feet. Together, they heaved it onto a bed.

"Get Madam Pomfrey," whispered Dumbledore, and Professor McGonagall hurried past the end of Marcus's bed out of sight. Marcus lay quite still, pretending to be asleep. He heard urgent voices, and then Professor McGonagall swept back into view, closely followed by Madam Pomfrey, who was pulling a cardigan on over her nightdress. He heard a sharp intake of breath.

"What happened?" Madam Pomfrey whispered to Dumbledore, bending over the statue on the bed.

"Another attack," said Dumbledore. "Minerva found him on the stairs."

"There was a bunch of gr.a.p.es next to him," said Professor McGonagall. "We think he was trying to sneak up here to visit Potter."

Marcus's stomach gave a horrible lurch. Slowly and carefully, he raised himself a few inches so he could look at the statue on the bed. A ray of moonlight lay across its staring face.

It was Colin Creevey. His eyes were wide and his hands were stuck up in front of him, holding his camera.

As much as Marcus should have been upset, he couldn't help but being relived it wasn't one of his friends.

"Petrified?" whispered Madam Pomfrey.

"Yes," said Professor McGonagall. "But I shudder to think… If Albus hadn't been on the way downstairs for hot chocolate—who knows what might have—"

The three of them stared down at Colin. Then Dumbledore leaned forward and wrenched the camera out of Colin's rigid grip.

"You don't think he managed to get a picture of his attacker?" said Professor McGonagall eagerly.

Dumbledore didn't answer. He opened the back of the camera.

"Good gracious!" said Madam Pomfrey.

A jet of steam had hissed out of the camera. Marcus, three beds away, caught the acrid smell of burnt plastic.

"Melted," said Madam Pomfrey wonderingly. "All melted…"

"What does this mean, Albus?" Professor McGonagall asked urgently.

"It means," said Dumbledore, "that the Chamber of Secrets is indeed open again."

Madam Pomfrey clapped a hand to her mouth. Professor McGonagall stared at Dumbledore.

"But, Albus… surely… who?"

"The question is not who," said Dumbledore, his eyes on Colin. "The question is, how…"

And from what Marcus could see of Professor McGonagall's shadowy face, she didn't understand this any better than he did.

Albus Dumbledore's POV

Albus was in a real problem right now, he knew where the entrance to the chamber was, how could he not? He has 50 years to find it with the help of Myrtle dying right above it, the problem was that only a perselmouth could enter, and he wasn't one.

So how can he enter that place? Who did Tom used this time to go inside this castle? And is there a way to make it another test for Marcus?

November 25 1992

Harry's POV

It was the day after Lockhart's first dueling club, and while Harry had better things to do, like talking with Luna, study microbiology (which, with the help of his new reading glasses he finished half of), reading arithmency (he was in fifth year's books right now as it was similar to a seventh year in muggle school with only bits of differences so he was only reading it as a reference and did not need practice), or practice magic, in fact everything would be better but as he needed to know if Marcus Potter could talk to snakes so he listened to the rumors of Hogwarts for the first time, and heard about the incident of Marcus talking to the snake and being horrified by it, after which his parents came to take him home.

As he finished breakfast and was about to go to the ROR for a few hours of studying before going to his blacksmithing lesson, he couldn't help thinking about the ramifications of both of them being able to talk to snakes and what did it mean about the horcrox in his head.