-"Harry's POV"-
I heard Lord Voldemort's voice, it told me I can never find any Horcrux even if I had help. Well, I thought I should never do it, but I led them into the Hogwarts Express. Just before I step in, we heard a strange sound. We looked back and saw a police box? materializing. A man in a tweed coat and a bow tie not to mention a fez in his head, came out.
/The Doctor's POV\
I was in the TARDIS, roaming around, checking things, when the TARDIS suddenly shook. "You started to malfunction again," I muttered. I barely finished the sentence when it stopped abruptly. I came out, and saw a train station, a bunch of kids with cartoons, wait, cartoons? Seriously? When I saw it they were entering a train, labeled The Hogwarts Express. Then, I saw the 2 kids in the middle, they rung a bell, but then I shouted "Harry Potter!"
##Harry's POV##
The man shouted "Harry Potter!" but still, I was confused, so was Percy. "How did you know my name?". "Easy," he replied. "They made books about you, only then, the series isn't complete. I've been waiting for the newest book, anyway, what year is it?" he said everything like he was a speedy speaker. But books about me? Do Muggles know me? Before I could think of answers to my questions, He looked at Percy, and, like he shouted my name, he shouted "Percy Jackson!". I looked at him, He looked as clueless as me. As if the man can read our minds, he said "Same reason for Harry, of course.""Can you please introduce yourself?", I asked. He just said "The Doctor.". Before I could answer, he said "Don't say that question, please,". But I nodded. I said we would go to Hogwarts and asked if he would follow. He said he would but he will use the blue box. We went in the express and students were staring at us. We found a big enough compartment for us. We both said, simultaneously, "What are your secrets?". "Alright, me first," said Percy. "We are demigods.". I was clueless. But I remembered the History of Magic OWL, Number 34 said, Wizards and Demigods are supposedly kept apart. Enumerate the 2 types of demigods. I just answered Pig-heads and Nose-haired. Then, I remember Hermione telling me that the answer is Greek and Roman. And I automatically asked, "Are you Greek or Roman?". "Greek" The blond answered. "Who are you?" I asked. "I'm Annabeth Chase" she said tiredly. "Now it's your turn," said Percy. I gulped and muttered, "I am a wizard.". He was also dumbstruck. Just as then, someone opened the door, It was Ron and Hermione.