Author's note; I was reading some of the stories on here, got my creativity going. Felt that I might as well entertain some people. This is a sequel to The Lost Hero. Hope you enjoy, if you don't, tough.

Disclaimer: This is a fan-fic. All rights are, of course, Mr. Riordan's.

Chapter 1

Percy woke up in a room that seemed familiar; there were shells in the marble walls. There were a lot of blues and greens, a fountain with running water, a large statue of a man with a trident. But there was something off, other than the fact that he couldn't remember anything. The face on the statue a little too harsh, the room too sparsely decorated. Percy tries to remember where he is, but he can't seem to pinpoint it.

He stands up and stretches, intending to explore and find some answers. He searches the pockets of his jeans but finds nothing but a ball-point pen. The pen is familiar. He can almost remember the things he's done with it, almost. Percy can't see the pen as an instrument of writing though, for some reason he sees it as a weapon. He uncaps it, thinking to see if there's any ink in it, and proceeds to drop the 3 foot sword made of what looks like bronze. Definitely a weapon.

Percy

He leans over and picks up the sword; it fits perfectly into his hand. He knows how to handle this thing, and he knows he's used it before. He touches the cap to the tip of the sword, and it turns back into a pen. This whole situation is weird. He searches the room, finding nothing of interest. So the next step is searching outside, he reasons. He walks to the door and opens it to a world that he knows he shouldn't be a part of.

There were people in purple t-shirts walking around all over. He looks around and sees 12 total buildings, including the one he just came from. In the distance he could hear metal clanging as it struck more metal. He assumed it was somebody practicing their swordsmanship. Percy walks into the courtyard in the middle of the U-shape created by the buildings. As he walks he sees more buildings behind the ones he first saw.

Percy was too busy looking around as he walked to notice the person standing in front of him. He ran into him and knocked him over.

"Watch what you are doing!" the guy exclaimed. Percy stuttered an apology and tried to walk away. They guy grabbed his shoulder and pulled him back.

"You're supposed to apologize." He says. The guy is around 6 foot, pretty well built, maybe 16. He's wearing a purple shirt under a breastplate, a sword at his side. Maybe not the best enemy to make on the first day of camp Percy decides.

"I'm sorry, I didn't see you there." Percy says.

"How could you not see me?" The guy demands "Who are you anyway, I haven't seen you before, and I've seen pretty much everyone."

"I don't know." Percy answers

"Very cute, now if you don't answer me I'm going to skewer you." The guy tells Percy as he draws his sword. Percy would swear the sword was made of gold….but why would anyone make a sword out of gold? Percy instinctively takes the pen out of his pocket, ready to uncap it if there is to be a fight.

"I'm Percy."

"Percy who?" What cabin do you belong in? Who is your commander?" The guy continues to demand.

"I don't know!" Percy yells. "I just woke up in this strange place, with no idea why I'm here! I don't even know where here is! Who are you anyway? Why do I have to answer to you?"

The guy's upper lip curls, and he lifts his sword. "I am Mark, Son of Mars and the commander of the First Legion, ever since Jason disappeared. Now I will reward you impertinence with a lesson in respect." The guy lunges at Percy.

Percy dodges to the right and uncaps his pen. As it grows into his sword, his mind is racing. He parries the next cut from Mark and tries a strike of his own. Mark flicks Percy's sword to the side like it's nothing. He then launches a series of strikes so complex that Percy can only defend himself. This guy is good, Percy thinks, but I'm better. Percy ducks to the left, coming up beside Mark, and grabs Mark's sword arm. He pushes Mark forward and sticks out his leg, tripping Mark and sending him sprawling to the ground. Percy then twists Mark's arm behind his back and holds Mark there. Well, that was fun, Percy thinks as he looks up and sees he is surrounded by at least ten people, all with swords drawn and pointed menacingly at him.

"Let him go." A girl says

Seeing no alternative Percy releases Mark's arm. He does make a point to pick up his sword and back towards a fountain situated behind him. Mark quickly stands up and brushes himself off. He also picks up his sword. All of the people start advancing towards Percy. They march in step, like they have done this before, a uniform killing machine. Percy steps into the fountain, he feels power flow through him. He knows he can make the water do anything he wants. Right now he wants a wall of water to form behind him.

The advancing line falters when an 8 foot tall wall of water rises behind Percy. But after a second's hesitation, they continue towards Percy. Percy watches with a grim expression as they close to within 5 feet. While he admires their discipline, he doesn't want to hurt anyone. It looks to him that he will have to. He doesn't know what is going on, or why they are all attacking him, but he won't give in without a fight.

He launches the wall of water into the line of demigods. Six are overcome and swept away. He follows his wave closely, heading for Mark. Take out the leader, and the followers will falter. As Percy is about to strike an unprepared Mark, he is hit from the side and knocked to the ground.

Percy is laying there with a growling wolf on his chest and is around 7 soaking wet teenagers who are quickly being joined by more, not-so-wet teenagers, surrounding him. He sees no point in struggling. He once again wonders where he is, and what is happening.

"Lupa, I was handling it." Mark seems to say to no one in particular. That is, until the wolf turns and looks towards Mark, and gives a snort of disdain. To Percy it seemed like a "Yeah, right, and you were totally about to get your head removed." Or maybe Percy was flattering himself.

The wolf turned back towards him, looking down it seemed to be examining him. Sniffing his face, his orange shirt, the leather necklace he was wearing. When the wolf saw the beads on the necklace it froze, and then started growling again. All the people standing around watching took defensive stances again, and waited. After a few moments the wolf spoke.

"What are you doing here demigod? How did you find this place?" it asks Percy.

"I don't know, and why do you call me 'demigod'? What is this place? Who are you?" Percy pours out his almost endless list of questions. The wolf steps back off his chest and sits next to him. Not sure what else to do, Percy sits up.

"I am Lupa, the director of this 'camp' of people who like you, are half-god, half-mortal. I do not know who you parent is, or why you are here, but it is not a good thing." Lupa explains.

"But Lupa," Mark says, "If he is a demigod, why should he not be here?"

Lupa takes a while before responding, as if weighing her options. Finally she says, "I cannot tell you. Mark, show him around; introduce him to other commanders. I'm returning to my den. Tonight at dinner we shall talk more, I must think for now. Everybody else go back to training. It seems we will have a lot to do soon."

Mark sheathes his sword, sneers at Percy, and turns away. Percy stands up, grabs his sword, caps it, and follows Mark. Neither of them says anything for a while as they walk. Eventually Mark starts to explain some of the activities going on around them. There was sparring, obstacle courses, formation drilling, and a class where you are taught about different monsters, what they look like, how to fight them etc… Most of it was familiar to Percy, but it still felt off, like there was something missing. It was really getting old, but he didn't know what it was.

Eventually he starts to ask questions about some of the activities. He gets short answers. Kind of like Mark didn't really feel like being helpful, just wanted to get the tour over with. After they have been all over the place, and a few hours had passed Mark asked Percy who his godly parent was.

"No idea, I don't know who I am. How am I supposed to know who my 'godly' parent is? I've been trying to tell you this all day." An exasperated Percy responds.

"Let me see your arm." Mark tells him.

"What?"

"Let me see the tattoos on your arm, they should tell us who your godly parent is."

"What do you mean by 'godly' parent?" asks Percy holds out his arms. No tattoos. Mark has a confused expression on his face.

"We are all children of the ancient Gods of Rome, but I don't understand, you should have a tattoo here that shows how many years you have served in the Legion, and who your parent is." Mark complains.

"Well, no tattoos." Percy says as he waves his arms.

"We need to find out where you belong. We have all had our tattoos since we joined the Legion. Most of us were two or three. Why are you different? Just who are you?"

Percy doesn't have an answer. Who am I? I feel like a normal person. But I guess I'm supposed to be part-god. So which of my parents is the god? And which god is it? Percy absentmindedly plays with the leather string around his neck, just shifting the beads back and forth. As he's doing this, something about the first one catches his eye. It was a greenish-blue bead, with a golden trident on it. He shows it to Mark.

"What does this mean?"

"The trident is the symbol on Neptune, god of the Sea." Mark says.

"Does that mean I am the son of Poseidon?" Percy asks. Before he gets an answer, he knows he is. He remembers the power he felt as he backed into the water of the fountain. It just felt right.

"Neptune," Mark corrects him, "And probably." He responds, Mark was also remembering that fountain, and the wall of water Percy summoned. "But that doesn't make sense; Jason was the only son of the Powerful Three."

"Powerful Three?"

"Jupiter, Neptune, Pluto, the three brothers and most powerful of the gods. Jason was the son of Jupiter, King of the Gods and Lord of the sky. He disappeared a few days ago, and we can't find him." Mark looked at the sky. "It's time for dinner, follow me. We are going to have to talk to Lupa."

Percy felt a sense of dread. Now he knew something about himself, but he didn't know if it was good. It felt like it was going to cause a lot of problems in this place. Also, for some reason, he couldn't think of himself as a Son of Neptune. He was a Son of Poseidon, though he didn't see that there was a difference.

As they approached a large building that Mark had told him was the cafeteria Percy was struck with the feeling he was heading for a wolf's den, and he was a medium rare steak. Well he'd been in worse situations before he thought. This can't end too badly can it? Of course it could, but he didn't want to think about that.

They entered the cafeteria and all faces were on the new guy. Mark headed straight for Lupa, who was standing on a raised platform on one side of the room. There were all many different tables there. Some full of people, some with none at all. There were also kids ranging in age from around 15/16 to what looked like 4, maybe 5. Percy followed Mark to the she-wolf. Mark bowed his head in respect, Percy stared.

"Ma'am, I did as ordered and showed Percy around. I believe he is a Son of Neptune. Earlier today, when we were fighting, he summoned a wall of water from the fountain in the courtyard. There is also a bead on his necklace that has the trident, symbol of Neptune, though he has no tattoo." Mark reports.

"No, he wouldn't have a tattoo. Percy, show me the bead." Lupa commands. Percy holds out the necklace, being sure Lupa can see the bead in question. Lupa looks from the bead to Percy's sea green eyes. "If he is indeed a child of Neptune, there is a simple test we can perform. He should be able to bend water to his will. So Percy, prove yourself to me, and all those here. Prove you are a Son of the Sea." Lupa says.

Percy looks around; everybody is still staring at him. There is a large tub of water that all the people are filling there cups from. What the heck, I guess it won't hurt anything. Come on water, soak the guy beside me. The water rises out of the tub, and smashes into Mark, knocking him to the ground and effectively soaking him. There a gasps of surprise and awe from the observers.

"I'm here all week." Percy says, trying to ease the tension. He helps Mark up and looks at Lupa. The she-wolf looks him straight in the eyes before kneeling on her front legs and saying.

"Hail Percy! Son of Neptune!" The entire assembly followed her example.

"Son of Poseidon. I'm the son of Poseidon." Percy tries to correct them. Unfortunately nobody can hear him because of the girl who suddenly burst into the room, wearing full armor, and her sword drawn.

"There are monsters approaching the North border. There are several Hellhounds and hydra, possibly a chimera. Maybe some others, but they were hidden in the middle. The sentries need reinforcement." She yells to the room.

All the people stand and rush towards the door. There are several people shouting instructions to the masses. That included Mark, who was rushing towards the door yelling for people to quickly grab their armor and meet him on the road heading North out of the camp. Percy was surprised at how organized their rushing about was. There was a small yip behind him. He turns to face Lupa.

"Go young hero." She tells him. "Show your new brothers and sisters your skills in combat. Don't fail them."

Percy rushes out the door, and follows after Mark, who Percy assumes is heading to marshal the troops on the North road.

End Chapter 1

Alright, reviews. Constructive criticism, positive comments, Look forward to it. Not sure when I'll type up chapter two, probably depends on whether you guys like it or not.