Disclaimer: Do not owe Harry Potter and or Doctor Who...Also I'm trying this story out please give me honest reviews if I should go forth on this story! Thank you :)

The Doctor has been traveling all around the world by himself. After he left Amy and Roy nothing has been the same. River didn't even want to be with him, might as well be alone. He was sitting in the console room for a long while thinking about his past, present and future. He sighed as he then sat back up and walked towards the console room slowly. He almost broke down as he was trying calm himself. He has lost so many of his companions, maybe it was time to travel by himself. He had decided to pick a random point in any universe."Come on sexy. Let's have a great adventure!"He said then manage to make a smile on his face.

The Doctor said putting a happy face When the TARDIS had landed he had took a deep breath then exhaled. He looked at the scanner with wide eyes."What have you done, sexy?"The Doctor walked out of the TARDIS then looked around. He couldn't believe he was within the books of Harry Potter. This seemed impossible to him. He breathed the fresh air, it seemed as though it was winter in this land. Was magic real in this world? Or a trick of imagination? He thought curiously as he was looking around. He stopped at a place called Diagon Alley. He saw many stores and people wearing funny uniform. Maybe he should pretend he's a teacher at that school. What was it? Hogwarts? He thought. Maybe he could teach muggle history? He put a smile on his face as he was going through the different stores. He took out his sonic to make more cash that they use. When he got his books and stuff he walked around Diagon Alley once more until Hogwarts Express was boarding. He went to King's Cross station then looked at his ticket. He wrinkled his nose at his tick curiously. He wasn't sure what 9 3/4 meant, he thought it was a practical joke.

He then asked one of the people who worked at the train station, though they laughed. He finally found 9 3/4 and looked confused as he saw a wall there. He wasn't sure how it was done. He looked around and noticed a family of four going in the wall, he was shocked. He looked at his sonic screwdriver and pointed at the wall to make sure he wasn't seeing things. He took one deep breath then walked inside the wall.

He smiled as he thought the science behind this so called "magic". He walked to one of the people who worked for the train and showed him his papers stating that he was working as a Muggle History Teacher for Hogwarts School of Witchcraft and Wizardry. The Doctor was able to walk right in and walk to a corridor. He looked at the window most of the time in the corridor, he didn't see anyone come by or hear the door close. He just was in his own thought. He then looked up and noticed a couple of kids sitting on their seats. "Hello!"The odd girl said to him."Don't bother him, he looks as though he's deep in thought."The Red head with freckles said. His one eyebrow raised up."That's alright, Ronald, I'm alright."He said then sat up looking happily.

Hermione looked confused at the man. He seemed off to her somehow. "I've never seen you here before."Hermione said. Ron rolled his eyes then started nibbling his candy that his mum brought for the ride. Harry was just watching the conversation. Yes, he did seem odd to him. "I'm your new teacher."The Doctor explained."I teach muggle History. As you lot call them."He said waving his hand. He set his fez up right on his head.

Ron was gawking at the strange man in front of them. He looked at his friend Harry."What is he wearing?"Ron asked whispering."I don't know."Harry whispered back then looked back down at his marauder's map. The Doctor kept an eye at Harry, he seemed interested in the boy.

"Are you sure you're a qualified teacher?"Hermione asked smirking at The Doctor.

Ron's eyes went wide at Hermione."Are you crazy? Questioning the teacher?"He hissed."what's gotten into you?"

"Well?"She Doctor took out his psychic paper to test it out on Hermione. She looked down at the paper and looked confused."It's blank."She said then crossed her arms.

"I was just testing."The Doctor said then took out his real credentials. "Here you go. All signed by the headmaster. Professor Dumbledore is it?" He asked curiously.

Few minutes have passed then the train stopped."Looks like we are here, see you three inside!" He said then rushed out the door.