Authors Note: hi, this is an F story. I don't own any of the characters from Camp Half Blood like Chiron and Percy and Annabeth. All I own is the idea and Ella and Casper 'cause I thought them up. I hope you enjoy.

Chapter 1~

It had started three days ago, when Chiron had received a message from a satyr in New York City, who was certain that he had found a child of Poseidon and a child of Apollo, and had requested backup. Finding another Poseidon Half-Blood was not how Percy wanted to spend his weekend, but nobody asked him.

And that was why he was sitting in a cafe with Annabeth, Piper, Jason, Leo, and Hazel. Frank hadn't been able to get away from Camp Jupiter on such short notice, and Calypso and Nico had declined.

"So, how much longer do we have to wait?" Leo was fidgeting with nuts and bolts. Percy couldn't blame him. After all, they'd been there for an hour.

"Her school should get out in ten more minutes. We can intercept her on her way back to her orphanage." Annabeth said, checking her watch. "And theres another demigod with her remember."

"How can we be sure she's a Poseidon kid?" Piper asked, licking her ice-cream spoon. "Its not like there's a definite test for this sort of thing."

"We'll just have to see." Jason said.

"We should head out. Her protector said she always take a certain route home, and its a few blocks away." Annabeth slid out of their crowded booth.

"Finally." Leo mumbled, but not loud enough for Annabeth to hear. he shoved his pipe cleaners in his pockets and climbed out as well. Reaching into his pocket, Percy grasped riptide like a lifeline. They had come prepared for a fight, after all, three big three kids (Percy, Hazel, and the new one) would send out a serious smell.

They all filed out of the cafe, Leo pausing to grab a mint out of a bowl on the counter.

The others moved ahead of Percy, who was wrapped up in his own thoughts.

"Percy?" It was Annabeth. "Are you okay?" They walked a bit behind the others.

"I'm fine." Percy gave her a weak smile. She just raised an eyebrow, because she knew something was wrong. "I just…. I'm not sure if I want a sister. I was happy with the way things were." Annabeth nodded.

"Yeah. But give her a chance, okay? You might be really happy with a sister, and its not her fault." Percy nodded.

They jogged to catch up with the others. We waited on the corner a few blocks from her school. A few minutes later we heard a faint school bell ring, and three kids came down the street towards us a minute or so later. And one of them had the unmistakable odd walk of a satyr pretending to be human. He had dark skin, curly black hair underneath a baseball cap, and converse high-tops.

The girl to his right had bubble gum pink hair to her shoulders, with streaks of red, blue, and green in it, like she was trying to make up for the lack of color in her bleached school uniform. She had a pixie smile, freckles, and green eyes.

The girl on the other side of her had wavy black hair to just below her ears, and wore a red ski cap. She had sea green eyes like Percy's, and a broken nose. She wore a school uniform too, but her tie was missing, and she had on a denim jacket over it. She was splashing in puddles on the sidewalk, splashing her friends.

"Would you please stop doing that?" Her satyr said as they got closer. The black haired girl shrugged.

"I like getting wet." But she stopped.

They reached the demigods on the corner. Annabeth was about to say something, when a hydra burst out of the nearest alley and sped towards them. Multiple things happened at once. The demigods pulled out their weapons, the two new demi gods looked shocked as their satyr dragged them back. The black-haired girl swore like a sailor, and the rainbow head's jaw dropped.

Percy rolled to avoid a fire blast from one head, while Leo ran headfirst into it, swinging his hammer into one of the monsters eyes. Hazel and Annabeth dove behind a trashcan just in time, while Jason lifted Piper and they buzzed around the things many heads.

"What is that thing?" The black haired girl shouted, pulling a swiss army knife out of her pocket, even though it wouldn't do much good.

"A hydra! Get down!" Her satyr tried to pull her back, but at that moment the hydra swung one of its heads and knocked Jason and Piper out of the sky.

"We have to help!" She said, pulling free of her satyr, followed closely by rainbow head. Rainbow head ran over to help Piper and Jason, while the black haired girl barreled straight towards the monster.

She dodged two fire blasts, and drove her swiss army knife into one of the monsters necks, or tried to. It wasn't celestial bronze or imperial gold, so it passed right through the monster. She ran backwards to where rainbow head was helping Piper stand.

Meanwhile, the others were having slightly better luck. Percy cut off one of the things legs and it roared in pain. Leo shoved Annabeth out of the was of a fireblast just in time, and Hazel nearly got flame broiled on the other side of the thing. The satyr joined Piper, Jason, rainbow head, and the blackhaired girl in an alley out of the line of fire.

"How is that thing not hurt? My knife went right through it!" The black haired girl looked fine, but frustrated.

"Its not celestial bronze." Jason told her. He was leaning heavily on the side of the building next to him, and had a huge bruise forming over his eyebrow. "Take mine." He handed her his sword.

"No! Get back here!" The satyr shouted, but she was already back in the fray with Jason's gold sword. She was faster then the group in the alley had ever seen. She dodged a fireblast, rolled to the side, and grabbed a hydra head as it swung past her. She flipped up and landed on its neck, and running up its neck she leaped through the air, and brought the sword down into the monsters back right over its heart. It exploded into golden dust, and she landed…. Well, not gracefully. She stumbled and dropped the sword, leaning against the telephone pole.

"Caspian?" Rainbow head called, she and the satyr running over to the black haired girl, whose name was apparently Caspian.

"Her name is Caspian?"

"Apparently."

"I'm fine." Caspian mumbled. "Just lightheaded."

"And you could have been worse! You ran right into a fight with no experience, and you could have killed!" Her satyr was scolding her now. "They had it under control! Why in the world did you think that was a good idea!?"

Caspian wasn't really listening to him. She was walking back over to Piper and Jason with rainbow head.

"Are you okay?" She asked Jason and Piper politely. "You took a nasty fall there."

"We're fine." Piper said. "Where did you learn to fight like that?"

"I never learned. Oh, and I forgot to ask," She gave them a sweet smile, like a kid about to ask for candy. "Who are you guys? What are you doing here? And what was that thing?"

"I'm Annabeth." Annabeth and the others had joined them. "This is Leo, Hazel, Percy, Piper, and Jason. Who're you?"

"Caspian. Call me Casper."

"I'm Flint." The satyr tipped his cap to us. "Protector, certified."

"I'm Aello." Rainbow head waved. "Call me Ella."

"Aello. That means 'strong wind' in Greek." Annabeth said casually. Ella nodded, but she looked confused.

"Sure. Strong wind. Totally." Ella said. Percy had to bite the inside of his mouth to keep from laughing. Ella obviously had no idea what Annabeth was talking about. "But why are you here? And why was that thing attacking us?" Ella obviously wasn't satisfied. "And why did Caspers pocket knife go through it? And why-"

"We'll explain everything when we get to camp. I promise." Percy glanced over his shoulder. "We should go before anything else shows up though."

"What camp?" Ella asked.

"I said we'll explain later." Percy said, rolling his eyes. Ella glared at him.

'Yeah. Their already getting along great.' Annabeth mentally moaned.

It took a while, but they finally convinced Casper and Ella to go with them to camp. They were back at camp in forty five minutes, and walking down half-blood hill towards the big house. "Is that rockwall on fire?"

"Yes." Jason said. "And you talk too much. You're giving me a headache here."

"Sorry." Ella laughed. "I'm just excited. Do we get to swordfight?"

"Yes. Now come one. You should meet Chiron."

"Who?"

"Please. No more questions."

"Does she always talk this much?" It was Percy.

"Pretty much." I nodded. "Unless shes eating, sleeping, or underwater." Percy smiled. It was the first time I had seen him do so.

"I think she's about to make Jason's head explode." I laughed. "Are you both from New York?"

"No." I said. "Ella is, but I'm from Chicago. I moved there with my mom when I was eight."

"Where's she now?"

I looked down at my shoes. I twisted the blue diamond and silver ring I always wore. It used to be my mom's. "I don't know. She disappeared."

"Oh. Sorry."

"S'okay."

At that moment, a tremor went through the ground, like a tiny earthquake. "What was that?" I asked, but Percy too looked worried.

We rushed to the big house even though the tremor had stopped quickly. A…. Horse guy met us. Straining my memory, I remembered that he was a centaur, half horse half man.

"I am Chiron." There were worry lines creased into his forehead, as he glanced at the ground nervously. "We have much to discuss."