I wanted to see how well my Harry Potter/ Percy Jackson and the Olympians story would turn out. Well, just so you know, I haven't been feeling up to writing my stories. I've got writer's block, and I've been kinda Lethargic (um, sluggish) lately. I hope you like the story, and I hope you review. Yo, I need the reviews! Here's the prologue...

Disclaimer: I do not and will not own Harry Potter or Percy Jackson.

Chapter 1:

Harry heard someone banging on the door of Dudley's second bedroom, which had turned into Harry's bedroom when he was eleven, and Harry sat up in bed. "Coming!" he said, grabbing his glasses and climbed out of bed to get dressed in his cousin's hand-me-downs. He walked to the door, opened it, and saw his aunt Petunia. "Yes, aunt Petunia?"

Petunia sniffed, her nose going into the air. "We are leaving tonight to go on a short vacation. We will be back on monday. I expect you and your sister to have this house sparkling, and there to be food still in the fridge. If you empty the fridge, I will make sure Vernon beats you senseless again. Get to work on breakfast." She turned around and walked down the hall, downstairs, and into the dining room.

Harry ran downstairs to see if Lillian was up yet, and saw her in the kitchen. He sighed with relief, until he saw her limping. "How bad did he hurt you, Lil?" he asked. He helped her gather the food for breakfast, and got to work frying bacon and making pancakes. He watched her out of the corner of his eye after putting a fully cooked pancake onto a plate.

"Pretty bad." said Lillian. She and her brother were identical except Harry had their mom's green eyes. Lillian looked up at her brother and said, "I think he broke my ankle. It hurts everytime I move it." She went back to making the eggs over easy. She didn't see the anger in Harry's eyes, but she did feel the wind surrounding him. She put a hand on his shoulder and calmed him down. "Don't worry, Harry, we'll be free of them tonight."

"Until Monday." Harry said, as they finished up breakfast. They placed the plates on the table, and went back into the kitchen to clean up the skillets. When the Dursleys got done eating, the three of them went to the livingroom, and Harry and Lillian went to clear the table.

~HP~SFT~PJ~

That night, when the Dursleys left, Harry made sure that Lillian was resting in the recliner in the livingroom. She didn't want him to, but he ran upstairs to write a letter to Madam Pomfrey at Hogwart's hospital wing. In the letter, he asked what to do for broken bones in the muggle way. Then he sent Hedwig off, and ran back downstairs to the livingroom.

A few hours later, instead of Hedwig returning, the livingroom's fireplace flashed green and Madam Pomfrey stepped out. She took one look at Lillian's right ankle, and rushed over to check it out. She knelt down and looked at the ankle. It was black and blue, and it was swollen. Madam Pomfrey shook her head and said, "It's broken. I'm going to have to take care of it at Hogwarts. Harry, go get your things. Hers too. We are all going to Hogwarts, and I don't think you two are ever coming back here again." She frowned.

Harry got their trunks, and owls, and brought them to the livingroom. He also went to get any extra things that they might need. He ran back to his sister and the Hogwarts nurse. She shrunk the trunks, put them in a pocket, let the Lillian's owl fly free to Hogwarts, shrunk the cages, and put them in another pocket. Then she held onto Lillian, and pulled a pouch out of a pocket.

She handed the pouch to Harry and said, "When I step into the fireplace with Lillian, throw a bit of the powder in, and I'll say the words. Then you come through." He nodded. She stepped into the fireplace, and when Harry threw in the powder, she said, "Hogwarts Infirmary." Then she was gone. She arrived at the hospital wing, and laid Lillian on a hospital bed next to the one that Harry usually had. When Harry got there, she did a diagnostic spell on Lillian. What she saw, she gasped. She then told Harry to sit down on his usual bed. She ran the diagnostic spell on him. She frowned.

Well, I hope you liked the chapter. Please review.