A/N: Hello! This is the prologue to my new story, and I hope you will enjoy it!

Summary: PercyOC. What's meant to be will always be, like the sea and his moon that pushes and pulls in equal balance. Best friends find their way back together, and the fates seal the promises of tomorrow. Follows the story from beginning till the end.

Prologue

~l*l~

Barely standing without toppling over, the little boy with a black mop of hair waddled around. His green eyes were bright with curiosity. A mischievous grin spread across his cheeks as he moved closer and closer to the little girl opposite him. Her hair was long, pale and white, the most beautiful thing he's ever seen, which wasn't much for a young boy like himself. She looked at him with mercury eyes and smiled brightly. She was like a light to him, and he was oh-so drawn to it. Settling down next to her, he asked, "Wha're you playin' wi', Ari?"

"My daddy bought me a doll," Ariadne showed him the doll with pride, "Will you play wi' me, Perce?"

He nodded eagerly in agreement and so they played for the rest of that afternoon on that living room floor as two adults watched them happily on the sofa behind. They were whispering quietly and taking pictures of the four year-olds as they started playing dolls. Thus far, the knight was on a quest to save the princess from a fiery castle of the horrible dragon. The giggling children could be heard and all was well that day.

"Would you like some blue chocolate chip cookies, Percy? Ariadne?" the voice broke through the playing children.

"Yes, mom!"

"Yes, Miss-us Jackson."

"Will you like some, John?" Sally asked kindly, but he shook his head. Looking fondly at his daughter, he ruffled her hair, "Leave the cookies with the children, Sally. They're the little cookie monsters! In fact, Ariadne and I should be leaving soon...We've imposed long enough."

"Noooooo," Percy hugged John's foot, "Don' leave. I wanna play wi' Ari."

"Well, how about Ariadne and John stay for dinner?" Sally suggested, receiving cheers from the two children. John smiled and chuckled slightly, "Well, alright. Thank you, Sally."

"It's not a problem, John," Sally placed a hand on John's shoulder, "Now, how does Mac n' Cheese sound?"

After hearing more cheers from the children, she rushed them out with John and a plate of cookies to keep them satisfied. She hummed as she cooked and listened to the sound of TV and children bickering, and how she wished it would last forever, but Sally knew that it wasn't going to and trouble will just be around the corner. Once the Mac n' Cheese was done, she called the children and John back into the kitchen. John helped Percy and Ariadne into their respective seats before helping Sally with setting up the table and serving the food as Percy and Ariadne talked about broccoli monsters and magical ice cream.

"Mis'r Davis," Percy said as they began their meal.

"Yes, Percy?" John looked at the boy with curiosity.

Percy took Ariadne's hand and held it tightly, grabbing her attention. "One day, Imma gonna marry Ari," he said boldly, "and I promise I'm gonna make her happy and protect her because she's a princess! She'll be my princess!"

The little boy paused suddenly and looked at the girl with a worried expression, "Is that okay?"

His concern diminished when she nodded happily and said, "Uh-huh!"

"We'll see. We'll see!" John laughed.

"Do you have to go?" Percy muttered. He was staring at the ground with a miserable expression in his face, too miserable for a seven-and-a-half year old. In his hands, he played with Ariadne's smaller, softer, delicate hand. Their foreheads rested against one another and whilst Percy felt miserable, Ariadne tried to stay positive.

"Hey, I'm not going to be forgetting you. We've been best friends since we were two years old, and don't forget I'll still be in America, Perce," she whispered softly, "I'll come back to you, I promise! You said we'd always find each other, right?"

"I did. I promised I would always find you," he whispered back.

Ariadne smiled at him brightly and took something out of her pocket, "I know it's not very nice but I made this. You see they're identical and we have one each. They're friendship and promise bracelets. I chose black, green, grey and white for your black hair and green eyes, and for my silver eyes and platinum hair. It's so you can look at it when you miss me and remember that I'm not so far away."

She tied one of the bracelets around Percy's wrist and went to do the same for herself when Percy stopped her, and tied the bracelet around her wrist himself.

"You're my best friend, Ariadne," Percy looked at her sadly with a pause, not knowing how she would react, cooties-and-all, "I promised mom and John I would marry you and protect you and make you happy. I don't know what I'm going to do without you."

"You are not going to take that bracelet off and I'm not going to take this bracelet off, and we're going to see each other soon," Ariadne said with confidence, "So, you have to promise me you will stay safe, protect yourself and protect Sally."

"I promised," he said earnestly, and she gave him a soft kiss on the cheek followed by a strong hug. When she pulled away, she gave a wry smile and said, "I have to go now or dad would be worried. Call me when you can!"

"I will!" he yelled after her.

Three months later, Sally pushed open Percy's bedroom door, not knowing what to say to her son. "Percy?" she asked.

Percy looked up from his position on the floor, "Mom?"

Sally decided to sit next to her son and put an arm around him, she really didn't know how to break the news to him. Percy frowned at her actions, "Mom?"

"Percy, there was some news on the TV just now, and," Sally paused, "there was a fire in Washington DC, and a body was found and identified as...John Davis."

"Our...John?" Percy asked slowly in shock.

"Yes. Our John."

"An- and Ariadne?" Percy asked quickly, in panic, "And where's Ariadne? Was she found?"

"No," Sally said and watched her son relax slightly, "Ariadne is missing. Nobody's seen her."

"But-but I just talked to her yesterday!" he cried, "I talked to her on the phone yesterday! Why is she missing? We have to go find her, mom! We need to go find her! She's looking for us!"

"Oh, Percy," she held him tight in her embrace as he cried, "The Police are looking for her...and we'll go out tomorrow morning and look for her too, okay? She'll be fine. They'll find her and you'll find her, okay?"

Whether Sally was reassuring her son or lying to herself...she no longer knew.