This is my first Percy Jackson fanfiction, but i have read all of the books and I love every singe one! This is set two years after The Last Olympian, and although I might get minor details wrong, please do me a favor and bear with me. i have a tendency of having short chapters, but I will be sure to make them action packed, or good in some awesome way! All i ask is that you read and review!

Oh, and disclaimer: I do not own the Percy Jackson books! If I did, Shelby and Shawn would be in the books, and...nevermind, I was aobut to give away a spoiler. Heh. heh. Never mind.

Chapter One

I woke up with a sigh. Monday. Why did it have to be a Monday? On the bright side, this time, it was a special Monday. It was the last day of the school year.

My name is Shelby Amber Parker. I have black hair that flows in a straight fashion to reach the middle of my back, blue eyes, and tanned skin. I dress in black a lot, and have a tendency not to get close to many people. My mom sees that as a problem, but I don't understand why. It's not a bad thing. Most people, if allowed to get close to me, would end up hurting me in the end. It has happened before.

You see, me and my twin, Shawn, we're…different. Just, in some way, we're different. We were both diagnosed with ADHD and dyslexia, and the only two friends that we have also have those symptoms. I sighed. Shawn and I are 15, right in that age group where friends and trust is most important.

I shook me head and got dressed, brushing out my long hair before walking down in my black shirt, gray jeans and black shoes. Shawn was already down there, no surprise. He was always down before I was. The thing was, he was cooking.

"Shawn, are you feeling all right?" I asked as he flipped the bacon in the pan. The pancakes were hissing on the griddle.

"Never better, Shel! Last day of school!" He grinned at me, and I shrugged in a what-could-go-wrong way, and began to set the table. Soon I was kissing my mom on the cheek as Shawn and I ran to the car that always brought us to school.

I closed the door behind me and smiled, "Lucky you guys! This is your last day of high school!" Shawn and I were only sophomores, while the other two were graduating as seniors today.

"Yeah, but you've only got two more years, Shel!" The black haired boy, who was driving, said to me.

The blonde in the passenger seat sighed, "Percy, two years is a long time!" Shawn and I tried not to laugh as Annabeth and Percy got into yet another argument. We didn't get another chance to talk, as suddenly Percy seemingly unconsciously jerked the wheel, sending Shawn and me to the floor of the car.

Annabeth glared at Percy, "What was that about?" but then her eyes widened as she said, "Grover?"

A half man, half…thing was standing outside the door, saying to Percy, "You've got twin half bloods at your school! I don't know who they're the children of, but whoever it is, he or she is powerful."

"Who are they?" Percy said urgently.

"Their names are Shawn and Shelby Parker." The half man thingawhatever said to Percy, and his eyes narrowed.

"But…" Percy began, but he didn't get to finish his sentence, because at that moment I shot up from the floor of the car and began to hiss at him.

"What?" I asked in disbelief, "What's a half blood? How do you know about Shawn and me? Who are you? What are you? Why should I listen to you? Percy, what is this about?"

The half-man thingamawhatsit gaped at me, "Percy, Annabeth, you two know her and her twin?"

As Shawn came up behind me, rubbing his head, I snarled, "Don't talk about me like I'm not here! I hate that more than anything!"

Percy sighed, "Yeah, I know Shelby, and Shawn. They've been our friends since the beginning of last year. Shelby, Shawn, this is Grover. He's a satyr: half man, half goat."

My eyes widened, "Those Greek myths…are real?" As Annabeth nodded, my mouth dropped open, "So everything I've ever been told is a lie? Who is my father then?"

Annabeth shook her head, "No one knows, Shelby. Until he claims you. Has anything strange happened to you and Shawn? Something that happened before you turned thirteen?" She looked at me.

I glanced at Shawn, and he said uncertainly, "Well, there was the time…" he trailed off, and I nodded.

"Shawn and I were walking home from school when we were twelve, and even though the skies were clear, a lightning bolt came down and came around us, but it didn't hurt us or anything, and we were about six inches from it on all sides. Then it just left. Faded away or something." I said, and then asked, looking around nervously, "What? Does that mean anything?"

Annabeth's face had drained of all color, and Percy was staring at me in shock. Well, so was Grover. "Shelby, Shawn, your father," Grover began, and then shook his head, "They need to get to camp. Now." He climbed in next to me, and we were off again. Later I wondered if he had noticed how I was trying to be as far from him as possible. We got home, and Shawn walked in, calling, "Mother?"

Our mom came around the corner and stopped, "Are you guys ok?" I shook my head.

"Mom, why did you never tell us that we were descended from a Greek God? One of the Olympians?" I asked, getting straight to the point. My mom dropped the plastic bowl she was carrying.

"How…when…who told you?" she asked.

"Well, Grover here kind of did." Shawn said, pointing to the satyr.

"He told you about Zeus?" My mother's face was white.

"Zeus?!" I yelled, "Our father is Zeus?! Lord of the Sky Zeus?" I looked around, hoping that someone would deny it. Unfortunately, I had no such luck.

"Shel," Percy said, putting a hand on my shoulder. I shrugged it off. "Shel, I'm like you. Annabeth is too. I'm a son of Poseidon and Annabeth is a daughter of Athena."

"Hm." I said, looking at Annabeth, "I wondered how you could be so smart. I should've known. Athena, the goddess of wisdom, is your mother. Ha, and Percy was insane in the water. Of course, his father is the God of the Sea." I wasn't looking at anyone, feeling betrayed. Shawn squeezed my hand, letting me know by that that he was feeling the same way that I was in that moment. Betrayed, sad, angry…yeah, we felt it all.

"Shelby, Shawn, we couldn't tell you." Annabeth said softly, "If you weren't demigods, where would that leave us? We wanted more than anything to keep having you as friends, because you're such great friends. I guess it was just luck that we found that you were demigods too. Now, no more secrets."

My eyes narrowed as I turned to Shawn, "I told you two years ago! I told you that I saw a centaur ram into our house! Then some huge mastiff came and started trying to dig it out! I knew that was real!"

Percy actually smiled, "The mastiff you saw was a hellhound called Mrs. O'Leary. She's basically my dog, since her previous owner died. The centaur is the activities director at Camp Half-Blood, Chiron."

"Chiron?" Shawn asked, "Didn't he train some of the heroes in the old myths?"

Annabeth nodded. "Yeah, that's Chiron. The gods granted his wish and let him keep on training heroes as long as he was needed. He's been training half-bloods ever since."

I bit my lip, "So, this camp…is that where we're going?"

Grover nodded, "That's where we're headed."

I looked around "Well, I'm just going to go pack then." and walked upstairs without looking back. I could hear Annabeth, Percy, Grover and my mother talking quietly in the front room, but I didn't care. I threw open a suitcase and filled it with my clothes, a hairbrush and other toiletries stuff, two of my favorite books, my notebooks filled with my writing, pencils, and a bracelet made from white gold, way too small now, a gift from my father.

I walked downstairs and sighed. Shawn had beaten me again. He grinned at me, "I win again, sis." I punched his arm lightly and he said, "We're all set to go, then."

We piled into the car once more (I made Shawn sit next to Grover this time.) and I stared outside of the car at the landscape. I refused to talk to anyone, even Shawn, and soon everyone took the hint and just left me alone. Finally I saw a hill rising up, and Percy grinned from the driver's seat. "Welcome to Camp Half-Blood." He said.

Like I said, read and review! Oh, and just so you know, there will be a major couple in this...somewhere...and I think I might just tell you...

Nah, I changed my mind. I'll wait until later. Just so you know, though...it is a pairing of an OC with one of Rick's characters. That's all I'm saying...for now...