This is my first fanfic. I don't know if it's good, so please review. I will NOT update very frequently. Don't complain. I have school and work. It comes first.

BANG! BOOM! CLANG! Percy awoke in Cabin Three when he heard the noise. Quickly, he got dressed and got ready with Riptide in his pocket. Why do I have to wake up two days after a quest and fight monsters or something?! He thought. When he stepped outside, all he saw was Jason sparring a dummy dressed in full armor.

"Seriously? You woke me up with your sword practice at 5:30 in the morning! Why up so early, Jason?" Percy exclaimed.

"I just couldn't sleep. I didn't even make much noise. You might of heard some hellhound trying to get in camp." Jason replied with a shrug.

"Oh."

Percy was already awake, so he decided a walk to the beach might help. I might even find Leo. He thought maybe Leo would wash up on the shore. Alive, of course. He couldn't believe Leo, the Supreme Commander of the Argo 2, was dead! Dead!

Walking along the shore, he saw someone in the distance. He thought he was hallucinating, but as he got closer, Percy was sure he saw a girl fighting something. It might be a demigod!

Percy ran to assist the girl and get her to safety. She was about 11, maybe younger, with blue eyes and dark brown hair. Her skin was tan, with a few scars. She was using a celestial bronze sword with a hilt of turquoise. She looked scared and angry. The monsters were two hellhounds, accompanied by a fury.

"Hey! Alecto! How's it going in the Underworld!" Percy tried to attract the fury, Alecto.

"Percy Jackson. Nice to see you again. I am feeling vicious, you know, so maybe I'll get you." She growled.

Percy dodged her, and sliced the monsters into dust. He helped the girl up,(she fell) and helped her get to camp. Finally, they got past the pine tree. He headed toward the Big House.

"What's your name?" He asked. "We're going to somewhere you can be safe."

"I'm Lily Takoda and I'm ten years old. My mother is dead and I've never met my father." She replied.

At the Big House, he went in. Chiron was still grumpy, because Percy woke him up. But once he saw the girl, he regained his posture. They went through the normal introduction they used for every single demigod, even though Lily, like everyone else, didn't believe it at first.

"Now, Percy, get Lily to the Hermes Cabin. Wait. Or not." As Chiron said that, a trident in blue glowed above the new girl's head

"A sister?" Percy almost shouted, "A SISTER! I have a little half sister!

The whole time, Lily was standing there, confused. "What do you mean? I don't think I have siblings."

"I'll explain later. Now first, let's get you settled in the Poseidon Cabin."

Percy talked to Lily about everything while they walked to the cabin. Soon, the conch horn sounded. Time for breakfast.