A/N: Yo! Here is the first chapter of my Harry Potter and the Assassin's creed fic.

Summary: What if it was Harry instead of Desmond? What if he went back to Hogwarts after?

I know there is already a fic like this, but I would like to go deeper into the Assassin's Creed story line.

Disclaimer: I do not own Assassin's Creed or Harry Potter, nor do I own any characters affiliated with them.

Chapter 1

Harry woke up to find a plain room with a closet and two doors. He found himself sleeping on an unfamiliar bed, as well.

Harry tried to recall what had happened last. He remembered that he had run away after he blew up his aunt for insulting his dad. After that, he remembered inhaling some gas with the last thing that he saw being a white triangle.

Before he could ponder anymore, the door opened and an old guy in a doctor's coat came in. "Get up, Mr. Potter."

"Who are you? Where am I?" Harry asked.

"My name is Dr. Vidic, and you are at Abstergo." Vidic answered.

"Why did you guys kidnap me?" Harry asked.

"Why? You are here to test our machine, of course." Vidic answered.

"What?" Harry asked confused at what the guy meant.

"You are here to test out a machine of ours, the animus. It works on the theory of genetic memory." Vidic explained before being interrupted.

"You mean DNA when you say genetic, right?" Harry asked.

"Yes, Mr. Potter that is exactly what I mean." Dr. Vidic stated a bit annoyed at him. "We are working with the theory that we can use a person's genome to access the memories of their ancestors."

"How you gonna do that?" Harry asked.

"The animus will take in some of your DNA, which we did while you were unconscious, and find your whole genome. From there, we simply choose the one that we want." Vidic answered.

"Huh." Harry said.

"Perhaps it will be better to show you." Vidic sighed.

Vidic walked out the door, and said, "Get up Mr. Potter. We don't have all day. Lucy, prep the animus."

Lucy was a twenty something girl with blonde hair, it turns out.

"How this works is you must lie down first." Lucy explained, "Then a visor will come across. This visor will have some settings in it. I will show you what it is once you are in."

Harry followed the instructions and stayed calm as the visor came across. True to Lucy's word, a screen filled with settings came up. Above the settings, there was a screen of DNA that said memory block over it.

"Okay, we will have to start you off at block one, but we are looking for block seven, right now, you are not synced enough to get to it. So, we will have to go through all of the other blocks." Lucy said.

Harry decided to just get it over with by going through the first memory.

When he dived in, he saw a blue screen, and a man called Altair a voice whispered in his head. He was a bit weirded out, but just ignored it.

He saw Altair demonstrating some moves in it. He also saw a new spell, one that didn't completely block damage, but could minimize it easily.

The scene became a cave with two other assassins' in it.

"Wait." Altair commanded.

"What is that?" One of the assassins said.

"A caravan that is full of Templars." Altair cursed.

"What are we going to do?" The other assassin asked.

"We will continue. Al Mualim has said that we must not let anyone else get the treasure." Altair commanded.

Altair then climbed up a ladder and jumped to the other side of a small drop. The others followed his lead.

They saw two people inside the first room they came across. Altair had slayed them with ease.

"Altair, we are not to slay innocents." One of the others hissed.

"Do not question me." Altair commanded.

"It's against the creed." The assassin that had questioned him said.

They leapt up a few ledges and climbed a few more before coming to a large open room.

"Hold here." Altair said.

They stayed put for a few seconds as a patrol passed with someone Altair recognized. "Richard." Altair hissed.

Altair looked for a quick way down before he jumped into the fray and killed three Templars and retrieved the item. He heard a scream and saw that Richard had gotten the other two. Altair just ran away without any care, he had completed his mission.

Fast forwarding memory to a more recent one…

Altair stood in front of Al Mualim. "I have it." Altair said, before giving the sphere to him.

"Good. Was there any trouble?" Al Mualim asked.

"There was nothing that I wasn't able to handle." Altair responded impassively.

"Where are the others?" Al Mualim asked.

"Dead. It doesn't matter anymore, I have completed my mission." Altair responded.

"Wrong!" A voice called out.

Altair and Mualim both turned to find one of the assassins that had gone with them.

"The other one died, but I am still alive. You didn't even bother to check before you left. You broke all three tenants of the creed during this mission." The assassin said.

"You did what?" The master said furiously. "You are never to compromise any of the creed, and you compromise all three? I will think of a suitable punishment."

Fast forwarding memory to a more recent one…

"This man has betrayed us!" Al Mualim called out. "He has compromised the whole city through his crimes! What should be done to him?"

"Kill him!" The crowd yelled.

"Very well." Al Mualim said before taking out his sword and striking Altair through with it.

Fast forwarding memory to a more recent one…

"How am I still alive?" Altair questioned.

"You are alive because I saved you. I have taken away your rank and weapons. You are now back to being a novice. I have nine people that you will need to kill in order to repent." Al Mualim stated.

"Mualim!" A voice called out from the gates and showed a good amount of people.

"They have come for us, Altair, go and spring the trap." Al Mualim commanded.

Altair fought through a few Templars that tried to stop him with a bit of damage, climbed a latter and came to a stack of logs at the top of a tower.

"What do you want?" Al Mualim questioned.

"Give us that which you stole, or die!" The lead Templar stated.

"No!" Al Mualim said before bringing one of his hands out and making a gesture.

Altair dropped the logs on the unsuspecting Templars and watched them fall to the army.

"Come, let us report back to Al Mualim." The other assassin that was with him for the mission said.

The assassin then made a leap of faith before running along some wires. Altair followed his lead, only stopping to get the flags that he saw.

They ran back through the city, only stopping to fight some of the remaining Templars off, and got to Al Mualim.

"Master, we have done as you have commanded." Altair stated.

"I have seen. You have done well, Altair. Get some rest before coming for your mission." Mualim said.

"Yes, master." Altair said before the memory went blue. Harry saw brief images of a guy with a long beard and staff, a witch with black hair, a guy that wore green, a guy that wore a silver sword, and a woman reading a book.

"Why have you pulled him out." Vidic demanded.

"Because any longer and we would have lost him and the memory, both." Lucy said.

"Humph, very well then." Vidic said.

"Get some rest; you'll need it for the next session." Lucy said after Vidic left.

Harry fell asleep as soon as he hit the bed.

"Merrydin, we can't let the Templars win this fight!" Morgana stated.

"We don't have a choice; we will lose too many people if we do. But, I have set up some safe measures." Merrydin said.

"What are those?" Morgana asked.

"I have rigged the key to take away their magic; they shall become completely unable to use it." Merrydin responded.

Morgana laughed before saying, "What is the cost?"

Merrydin became serious and said, "I shall kill myself in order to completely seal it away."

"What?" Morgana screeched, "We have just had a kid and you want to leave him without a father!"

"I don't want to, but there is no other choice." Merrydin said.

Merrydin was hit with a spell in the back before he could do anything.

Fast forwarding Memory to a more recent one

"How are we going to repel those dragon hoarders?" Salazar asked.

"We must stop the Templars at all costs." Godric stated.

"I have looked through my library and believe that I have a way to stop them. But, it is going to take an extreme burst of magic." Rowena said.

"How extreme?" Godric asked after exchanging a look with Salazar.

"You would have to remove all your limiters. Helga shall do that for you." Rowena answered after a bit of consideration.

The two immediately began clashing as Rowena chanted and Helga poured the magic around the castle.

The two continued until a great burst of light came and they were both on the floor, panting, while Rowena was blown back and Helga was pushed to the ground, unconscious, by the shrapnel.

When Salazar woke up, he noticed that he was the last to wake.

"Did it work?" Sal asked.

"Yes." Rowena replied proudly. "Hogwarts is now protected from the Templars."

"What about other threats?" Sal asked.

"There is a warning system for them." Godric replied.

"I have an idea on what to do with the castle" Sal said.

"What is it?" Helga asked.

"We shall train the people in the ways of magic."

Fast forwarding…

"What the hell was that?" Harry asked quietly.

Done! Hope you guys like this chapter!