Rachel really wasn't expecting much that fateful day. Yet the day she found Percy and Annabeth in cabin three was the day she changed everything at Camp Half-Blood.

Rachel was walking through the campgrounds, a pair of yoga pants on along with a camp shirt. She wasn't a camper but a lot of campers treated her like she was one. She kind of liked the fact that no one looked at her like she was the odd one out.

Rachel may not have had the same powers as some of the other campers, but she did train with them. In fact, she had Annabeth teach her how to fight, even though most monsters would leave her alone. Rachel just wanted to have the ability to fight, even if she knew she'd never use it.

The red-haired mortal wasn't as fit as the demigods around her but she certainly was attractive. Her thick thighs and jiggly ass were often in the dreams of many of the guys around camp. Rachel knew she was attractive, but she also knew that getting a boyfriend was on the very bottom of her to-do list. Her duties as Oracle came first.

In fact, she hadn't kissed a single demigod around camp except for that one time at the beach with Percy. Now she wouldn't dare touch Percy. Annabeth had claimed him, and Rachel wasn't about to get in the way of that. She shipped them.

As Rachel moved through the camp grounds, she strayed closer to the male Olympian cabins. She wasn't really going anywhere, she was just taking a walk. Even her room in the Big House got boring, she could only watch TV for so long.

That's when she passed cabin three.

Rachel was about to pass the Poseidon cabin when she noticed a muffled sound coming from within the cabin. Slapping and moaning sounds came from inside the cabin. Rachel paused, her mouth slowly forming a 'o'

"Is he getting busy in there?" Rachel asked herself.

She knew Percy and Annabeth were quite the couple, they did a lot together. Having sex wasn't exactly surprising. Rachel knew the son of Poseidon wasn't a virgin, Annabeth made it abundantly clear she fucked him plenty of times before he went missing.

Rachel crept closer to the door of cabin three. The closer she got, the more sounds she could hear. Those moans were definitely Annabeth, the daughter of Athena had a distinct yet sexy voice, her moans weren't any different. A bed was creaking inside the cabin, sounding on the verge of breaking.

Naughty thoughts of a certain blonde riding a dark-haired son of Poseidon filled Rachel's mind. She was always a bit jealous of Annabeth, Percy was really handsome. If Rachel hadn't known any better, she would've thought he was a minor god or something.

Rachel's body acted before she could even think. Next thing she knew, her hand was on the doorknob and she was slowly opening the door. When she fully opened the door, she was greeted to the sight of Annabeth on top of Percy, her ass facing him. Percy had a grip on her hips and was moving her up and down.

Both demigods' heads snapped to the door, their eyes widening as they realized someone had caught them.

"Uh, ah, hey, Rachel!" Percy stammered.

"Hey, Percy." Rachel said as she walked in and closed the door behind her.

Annabeth wiggled on top of Percy for a moment, "Well, do you need something? We're kind of in the middle of something."

"No, not at all. I just came to tell you guys you're really loud." Rachel said, putting a hand on her hip.

Annabeth sighed, "Well, at least it was only you."

"So, I was wondering, how exactly do you guys do this type of thing?" Rachel asked, sitting across from them on an empty bunk.

Annabeth looked back at Percy before turning her gaze on the redhead, "You want to know how to have sex?"

Rachel pointed to herself, "Does virgin Oracle mean anything to you?"

"You do realize the modern Oracles don't have to be virgins, right?" Annabeth asked, "I mean, back then, women weren't really fighters. They couldn't even wrestle."

"Even if I wanted to have sex, I have no idea how." Rachel said, "So show me how."

Annabeth looked back at Percy and nodded her head. She climbed off of him, revealing Percy's dick to Rachel. The Oracle nearly gasped Percy was huge. He wasn't just long either, he was pretty thick. The head was round and covered in Annabeth's slick.

The daughter of Athena boasted her own rather sexy features. Her ass wasn't as fat as Rachel's but it was still big and round. It had its own mix of jiggle and firmness, her thighs the exact same way. Rachel was jealous of her breasts though, they were far bigger than her own.

"Just watch me, okay?" Annabeth said as she got on all fours right next to Rachel. She wiggled her ass a little towards Percy, who moved in behind her. She looked over her shoulder, "Alright, fuck me, Seaweed Brain."

Percy gripped the demigoddess's hips before driving into her. His hips rammed against her ass with a slap. Annabeth moaned and threw her head back. Rachel watched the scene in front of her with wide eyes.

Percy pulled his hips back before slamming into Annabeth yet again. Annabeth moaned, her eyes looking naughtier than ever as she turned to look at Rachel.

She winced when Percy thrusted into her again, "See how he's fucking me? Do you think you can handle it?"

Rachel was going to be completely honest, she wasn't sure if she could. The way Percy was fucking Annabeth looked painful, he was driving every inch of his thick shaft as deep as he could into her. The daughter of Athena's face scrunching up with every thrust didn't exactly make her feel any better.

"I don't know." Rachel said, "Doesn't that hurt?"

"No," Annabeth wiggled her hips, "It actually feels pretty good. I'll let you try Percy but only this once."

Rachel couldn't believe what she was hearing, she was going to get fucked by Percy Jackson. A tingling in her stomach made her feel all giddy inside.

"Okay." Rachel said.

Annabeth grinned at her before looking over her shoulder at Percy, "You think you can fill up two girls, Percy?"

The son of Poseidon grunted before smiling, "Like I don't cum inside you almost three times a day."

"Well, then fill me up, hot shot." Annabeth said, bucking her hips.

Rachel watched with lustful eyes as Percy started to speed up, his balls slapping against Annabeth's pussy. Next thing she knew, Percy rammed himself as deep as he could inside Annabeth's tunnel before letting out a loud groan. Annabeth moaned in response.

With a sigh, Percy pulled out, leaving a thick trail of semen running down Annabeth's thighs. Rachel watched the display, she was growing ever hornier now. That was the hottest thing she had ever seen.

Annabeth fell on her side and let out a few deep breaths, "Your turn, Rachel."

Rachel was nervous yet excited as Percy walked over to her. He smiled down at her before picking her up by her arms and pulling her shirt over her head. He dropped it to the side and admired the green bra she was wearing. Rachel smiled before unclasping the bra, letting her breasts fall free.

Percy's gaze on her tits had her feeling a bit uncomfortable and insecure, so she crossed her arms over them, her cheeks reddened.

He pulled her arms down, "Don't be embarrassed, they're really nice."

"But they're not as big as Annabeth's." Rachel looked over at the blonde daughter of Athena.

"Eh, I don't care." Percy said before pulling her pants down. He looked up at her with a smile before using his teeth to pull her panties down.

Rachel kicked off her shoes and stepped out of her clothes. She stood naked in front of Percy, her ivory skin looked smooth since it didn't bear the scars of being a demigod.

"You ready, Rachel?" Percy asked.

The redhead rubbed the back of her neck before turning and climbing on all fours, just like Annabeth did. The daughter of Athena looked on with approval.

"Alright, move up a little more." Percy said, shifting her up before kneeling behind her.

Rachel looked down, she felt ready as she could be. She still was a little scared when she felt that monster of a cock probing her entrance. Percy rested his hands on her full hips.

Rachel's eyes widened and her mouth gaped open as she felt Percy started to push into her. Her lips split apart to allow his mushroom head to start pressing through her vagina. Percy gritted his teeth as he slowly forced his way deeper into Rachel. She curled her toes in response.

Percy looked over at Annabeth, who was smiling widely at him. She winked.

Percy gripped her hips and with a grunt, slammed himself deep into Rachel's pussy, splitting her lips apart as he impaled her onto his pulsing shaft. She let out a loud moan when Percy broke through her hymen.

Rachel felt like her pussy was going to break because of the giant dick Percy just rammed into her. Her lower regions flashed with bolts of pain. She could feel every inch of Percy, from his pulsing head to the veins of his length.

"You ready?" Percy asked, leaning is behind her and kissing her neck.

"Yes." Rachel let out in a breathy moan.

Percy straightened up and started to thrust in and out of Rachel's already stretched pussy. His balls slapped against her outstretched lips, creating a wet slap each time he pushed into her. He grinned at the satisfying jiggle of her ass as he shoved himself deep into her. He couldn't wait to dump his load inside her, though he was definitely going to give Annabeth even more.

"Fuck, fuck, okay!" Rachel squeezed her eyes shut as she gripped the sheets.

Percy grinned at her, Rachel didn't curse anywhere near as much as he or Annabeth did but hearing her curse had him ready to burst.

"Fuck, Percy!" Rachel let out in a strangled moan.

Percy grunted when he felt Rachel squeeze down on him, like she was trying to crush him. It actually hurt a little, he nearly pulled out of her completely. Unlike Annabeth, she didn't squirt. Annabeth did the whole tightening deal too, but it stopped after Percy stretched her out enough.

"I'm cumming, oh fuck, Percy, stop! Wait, no, keep going!" Rachel shook her head while she went crazy.

"I'm going to cum!" Percy yelled.

"Fill her up good, Percy!" Annabeth cheered.

"Wait, I'm not on the pill!" Rachel cried out.

Percy rammed himself as deep as he could before shooting his seeds into Rachel. He pulsed inside her. Rachel moaned and yelled. Rachel's womb filled up quickly with the thick white substance coming from Percy's balls. Soon, more cum started flowing out of the side of Rachel's pussy.

Percy pulled out his dick, which was now covered with his own cum. Rachel fell forward, burying her face into the pillow. Annabeth crawled over and started sucking Percy's cock clean. She looked over at Rachel before giving Percy a naughty look, "Good job, Percy. My turn."

A/N: So i was going to end the story with the last chapter but i figured after seeing the review asking for a threesome with Percy, Rachel, and Annabeth, i came up with this. I'm not really a threesome type writer so i tried my best. The Piper, Percy, and Annabeth scene will take a bit.