A/N: A quick note about this story. I've screwed up the timeline between PJO and HOO. This story takes place in the Summer of 2010, a year after the Battle of Manhattan (2009). If it all goes well, and as planned, it'll tie in nicely with the beginning of HOO.

I wrote this in '11 had a really big hiatus from it and recently started up again. I figured if I posted it on here I would actually finish it. We'll see.

Rick Riordan obviously own this universe and the characters that belong with it. I own my own characters. And I'm just going to credit Nathan to him because I think there was a character named Nathan in PJO but I can't remember. Better to be safe than sorry.

I hope you guys enjoy.

Percy couldn't remember the last time he'd had a simple night's rest. There was always seemed to be something that made it complicated. Lately he'd been having a lot of non-prophetic dreams. Not that he was missing those prophetic dreams. On the contrary, it was kind of nice not to have the world on your shoulders. He'd already tried that and it sucked.

Percy supposed that what made them complicated was that he kept seeing the same person over and over again. Only, he didn't recognize it. Annabeth had once told him that the mind couldn't make up faces. Instead, all unrecognized faces belonged to people he'd seen at some point in his life. Even if it was just a glance. Basically, the brain had an endless amount of characters to use for a dream. But it was the fact that this particular person kept appearing was bothering him.

After the dream, it was always hard for Percy to remember the exact details. He knew, and kept from Annabeth, that this person was a girl. And that she had long, black hair. But he could never remember the exact details of her face, he just knew it was hers.

And Percy had come to suspect that this girl was a halfblood, like him. His suspicion had been confirmed in that night's dream.

It was a battle field on fire. As in he was actually on a field, which was on fire, and there was a battle going on. Though he could see little because of the smoke, the sound of swords clashing swords and shields was loud and clear. He could hear formations being called out in every direction, someone calling for water to douse the flames.

And then, right in front of him, stumbled a giant bird and a girl. He recognized her immediately, even if she was wearing full armor. And then the bird opened its wings, it was not what Percy was expecting. The ugly bird woman seemed to growl at the girl, who had a sword point right at it.

"Be gone Fury," the girl said in what Percy would later remember to be in Greek. "No one here has done wrong for you to take and torture down to Tartarus."

"Demigod, you insolent fool," the Fury snapped. "Who do you think you are? Talking to me in that manner? I am as old as the parent who sired you. Besides, not all is as it seems. Do you not think that your campsite would have been betrayed? Looking around you daughter of the sea, the place you call home is enflamed in the anger of your conquerors. The time of your people has come to an end and a new empire will rise."

"No," Percy could see this girl was determined, "You are wrong. We Hellenes will unite and rise up to protect our kingdoms and fight in the name of our gods."

The Fury laughed. "You fool. Your people don't even refer to yourselves in the same manner. Hellenes, Achaeans, Ionians, Dorians, it does not matter. You shall all perish in the same manner." The Fury looked at the girl and took a step back. "But you are right about one thing sea-child. There is no one left for us to take." And with that, the Fury flew off before the girl could react.

"Kellan, Kellan!" Percy barely heard the shout over the sound of the roaring fire and the clashes. He turned towards the voice and a young man covered in sweat, soot and possibly blood emerged from the smoke. "We must go. There is nothing we can do. The camp is lost."

Percy realized then, that he was speaking to the girl. And for the first time in that dream, she turned and Percy was able to see more than just the profile of her face and hair. It too was streaked and ashened, but the color of her eyes was vibrant against the darkness. From the cold look she had, the grey eyes seemed to be able to cut through him.

"No," Kellan insisted and turned away from him. "Alexias, no. We cannot give up. This is our home and I shall not let them have it without a fight." She made to go, but the warrior Alexias held her by the arm, pulling her towards him. As he whispered something in her ear, Percy could tell she was the kind of person who wasn't going to be letting go of the idea without a fight. Stubborn, kind of like Annabeth. He bet it made her a great fighter.

The world was starting to fog over, and Percy knew the dream was coming to an end. He barely caught Kellan nodding, dejectedly, then disappearing into the smog.

He woke up to the sound of a bellowing horn.

"What's happening?" Percy asked, catching up to Annabeth on the run of the hill.

"Looks like there's something coming," she told him, and grinned slightly at the sight of his pillow head. "Percy. Did you at least look in the mirror?"

"Of course not," Percy told her, patting down his hair. "Look, there's Grover." They hurried over to the satyr who stood with others looking down the hill.

"Don't we have a dragon to protect the camp? I don't understand why we had to get up this early," a camper said somewhere amongst the masses. Percy wondered the same thing, and looked around. Everyone seemed rather confused, then who had blown the horn? And where was Chiron?

She appeared, through the throngs of the trees. Percy couldn't tell who it was, and with camp having just started for the summer, no one should have been returning from a quest. But maybe it was someone arriving for camp. But then why the horn?

"She's stumbling," Annabeth muttered to him, her eyes on the girl who just appeared. "Unbalanced and glancing over her shoulder, this is not good." On cue, there was aloud thundering sound, and it wasn't from the sky.

"Archers ready," Annabeth yelled and you could hear the scrambling for weapons. Percy uncapped the pen and Riptide appeared. "Percy, the girl."

Percy focused his attention the stumbling girl and nodded. "Watch my back," he called and ran down the hill. And the trees started to fall.

There was a giant roar sound, and Percy recognized it immediately. "Minotaur," he yelled, running to the girl who had taken her last fall and wasn't getting back up. He could hear Annabeth yelling behind him, and as the Minotaur appeared before him, the sound of arrows flying in the air.

Percy slid next to the girl and covered them both with his shield, just in time to hear the arrows hit the metal and bounce off. "They need better aim." He muttered.

"Water," the girl said softly, her eyes closed and Percy looked down at her. There was a sense of familiarity when he looked at her, but he couldn't pin from where. "Water," she managed to say again, before falling in an unconscious state.

"Okay, this just got harder," Percy sighed and pulled the shield away from them. Sword ready, he saw that the dragon meant to protect the camp was dealing with the Minotaur, who was roaring angrily.

Knowing that was under control, Percy capped Riptide and motioned for Nathan Tyler, son of Apollo, to come help him. "We have to get her over the line," Nathan told me. "There's dried blood on her hair line, so careful. Don't need to make the head injury and worse." Percy nodded and together they lifted her up from floor and started moving up the hill. And not for the first time since joining camp, he wished the hill went down instead of up.

"I don't think we'll be able to find out if there are any more injuries until she wakes up." An unknown voice was penetrating through her mind, but Kella was having a hard time opening her eyes.

"And when do you think that will be?" Another voice said. Both were male, but on the young side. Still inexperienced and unhardened by time.

"Anything from a few hours to a few days. Head wounds can be tricky Percy. The human brain is tricky. Until we can get some nectar and ambrosia in her, it's all going to go at a normal speed. We're good, but we're nothing like our dad."

Dad. Nectar. Ambrosia. These were all words that were familiar to her, kind of like from a dream. Or maybe this was the dream and those were reality. Something was wrong and something was right. She just had to get herself to open her eyes.

"Percy Jackson," there was another voice, this one was loud and demanding. As well as female. "Leave Nathan alone. I contacted Chiron through an Iris message, and he's on his way back." Kella heard everything and a sense of urgency to wake up overcame her. But she was tired and becoming aware of a pain in her head. "She's flushed, fever?"

"Just a little one," the one named Nathan said. "It could be an infection from the head wound. Here Annabeth." Soon, Kella felt something cool on her forehead and a rushing feeling ran through as she felt a bead of water slid down her face.

And she opened her eyes.

Percy was the only one to notice their new camper's eyes open. And he didn't say anything, he looked at her and she looked back at him with her blue. They reminded him of the Mediterranean sea; which he'd only seen in Annabeth's books.

"Percy Jackson," she finally said, drawing Annabeth and Nathan's attention, and breaking the spell between the two of them.

"Or she could wake up now," Nathan said, slightly amused as he pulled up his supplies.

"Do you know who he is?" Annabeth asked. Percy could see how her eyes were fixed on the girl in a suspicious way.

The girl shook her head, then winced slightly. He thought someone should have told her she had a head injury before she did that. "You said it. Just earlier. I heard, I think." She still seemed confused before she focused on Annabeth. "And you're Annabeth?" she asked questioningly. "And your Nathan?" she asked, turning her head towards him."Your dad's a doctor?"

"Kind of," Nathan grinned slightly as he sat on the edge of the bed next to her. "I guess you heard a lot while you were unconscious. I think it proves what they say about talking to people while they're in comas," Nathan said thoughtfully as he pulled out a pen light and flashed it in front of her eyes, making her close her eyes and lean away from it.

"That's just a bit too bright," she said, opening her eyes slowly. "It hurts my head. And I started hearing when you said you'd only find any more injuries when I woke up." She stayed quiet before asking "Where am I?"

Percy looked at Nathan and then they both looked at Annabeth. She sighed and muttered something that slightly resembled cursing and boys. "You're in the infirmary," Annabeth told her. "Of our camp." The wounded girl just looked at her, waiting for the rest of it. Percy noticed how she didn't seem scared, or worried. She was tranquil, at least on the outside.

"I got that." She said and pointed to Nathan's shirt. The word Camp peaked out of the top of his half zipped jacket, hiding the Half-Blood portion. "Is it run by kids?"

"Chiron's, the activities director, he's on his way from an errand," Annabeth told her. "Mr. D is…away. He's the camp director. The Senior Counselors are in charge. You're looking at three of them." There was a kind of impatient tone to it, and Percy wondered what Annabeth was thinking.

Nathan grinned slightly, and drew her attention away from Annabeth. "Sorry about earlier, I had to see your pupil reaction. Seems fine enough, but with head wounds you never know. Let's try a memory test. What's your name?" Percy realized that they were about to tell this girl all about them and camp, and knew nothing about her.

"People today call me Kella," she said and looked at Percy before turning back to Nathan. Percy frowned slightly. The name, he had been expecting something different than the one she gave. Then that meant she wasn't the same as the one from his dreams. But she had said 'people today'…

"Kella," Nathan repeated and grinned. "I like it." Annabeth rolled her eyes. Nathan was notorious for being a sort of flirt at camp, and with his good looks, it made a bunch of people believe he was actually a son of Aphrodite instead of Apollo.

"Do you remember how you got here?" She asked, breaking in. Kella frowned, a concentrated look on her face.

"It was dark," she said slowly, "And then it wasn't. I was being chased by a monster, there were a lot of trees and the sun keep hitting my eyes. The more I ran, the more I started to trip because I wasn't looking where I was going. I just knew I had to keep running, I had to get somewhere other than there. Get help." Kella's eyebrows were scrunched together in a universal sign of an ache. "And then I got to the hill and there were people lining it like a wall. I fell and this time I couldn't get back up. It all gets confusing and fuzzy after that. I can't remember."

"And before that?" Nathan asked a concerned look on his face. "Before it was dark?"

"I don't know. It was just dark," Kella said then grabbed her head and took a deep breath. Percy and Annabeth exchanged looks.

"Here," Nathan said and handed her a couple ambrosia squares. "It'll help."

"It's ambrosia," Annabeth told her. "You know, god food." Percy could tell she was getting ready to give her the whole half-blood, Greek gods talk. But Kella just kept surprising him.

"I know," Kella said, eating the squares. She seemed to savor their flavor before turning her attention to Annabeth. "I know everything. About the Greek gods, demigods, monsters. That they exist."

She left Nathan, Percy and Annabeth speechless. Until Nathan just laughed and handed her a glass of nectar. "Well that's one less thing to worry about."

"If you know, then why ask where you are?" Annabeth asked.

"I didn't know where I was. I don't recognize this place." Kella told them. Percy, who had remained silent for a long time started placing the pieces into the correct place.

"You're" he started, but then stopped by the look she gave and the slightest head shake. "You're going to be safe here," he finally said in compensation. "The camp is surrounded by a magical boundary. No monsters could get in. Chiron will be back soon, and he'll be able to help you."

And then for the first time since they meet her, Kella smiled. And Percy knew that everything was going to be alright.

And then he remembered there was always a calm before the storm.