The Winchester brothers jumped out of the Impala at the motel they were staying at after finally finishing a hunt. Sam unlocked the door and Dean followed him in, flopping face down on the bed.
"Dean." Cas's sudden appearance made both of them jump up, guns pointed at them When Dean saw who it was, he muttered under his breath and dropped the gun.
"What do you want Cas?" He asked, sitting back down. Seeing Cas's face, Dean become slightly more worried.
"I found somewhere where we can learn more about Perseus. Well, his Vessel anyway." Cas explained, looking around the room. The pair of brothers sat straight up.
"How are we going to do that?" Dean asked, looking straight at Cas.
"He went to a summer camp when he was younger, called Camp Half-Blood. It was originally run by Dionysus, but since the war with Gaea, Chiron has taken over." Cas told him.
"Chiron, as in the centaur? Trainer of heroes?" Sam asked, his eyes wide. "Isn't he dead?"
"Nerd." Dean coughed and grinned as Sam turned to him, giving him that 'Are you serious?' look.
"No Sam, Chiron is very much alive. We tend to stay out of the pagan gods business." Cas explained, rubbing his face.
"So Cas, where are we going?" Sam asked, turning away from Dean.
"Long Island, New York." The trench coat wearing angel said, turning from the desk to them.
"Can I sleep first?" Dean asked, laying facedown on his bed, so his voice was a bit muffled. The other two looked at Dean, one with exasperation, and one with confusion.
"Two hours Dean. Then we should get on the road." Sam relented. The only answer he received was a snore. Sam chuckled softly and turned to Cas.
"Can you tell me a little about where we're going?" He asked. Cas looked around, as if to see if anyone else was listening. When he was satisfied no one, he turned to Sam and shook his head.
"No, but I can tell you about the Olympians."
~Two hours later~
"Dean, wake up." Sam said, shaking his shoulder. The older Winchester slapped at his arm.
"What? What?!" Dean asked, rubbing his eyes at he sat up. He saw Sam in his jacket, ready to go.
"Right, right." He sighed and stood up. "I'll be out in 5." Dean said, disappearing into the bathroom.
~Long Island, CHB Border~
The trio stood on top of Half-Blood Hill, staring into the valley below. Dean looked at the cabins below, his eyebrows raised.
"You're saying the gods designed these cabins?" He asked, turning to Cas. The angel looked up and thought for a moment.
"More so their kids. The demigods." Cas finally answered, looking back at Dean. Dean rubbed his eyes and turned to the border.
"Well let's go." Dean said and walked forward. Sam followed him, a bit hesitant because of what Cas had said, that only gods and demigods could get through. A sigh of relief passed his lips as he felt the border wash over them, and saw Dean shudder. Cas walked in front of them, his angel blade on the verge of slipping out. He could feel the power radiating off of everyone in the Camp, but one cabin in particular had a very large and powerful aura. Cas was shaken out of his thoughts by an angry female voice.
"Who are you and how did you get in here?" The trio whipped around to see a blonde teen, probably around the age of 18, pointing a bronze dagger at them. Dean, being his arrogant self, grinned at her and stepped forward. In a flash, the older Winchester was on the ground, the dagger at his throat.
"I'll ask again. Who. Are. You?" She growled at them, her stormy grey eyes flashing dangerously. Sam stepped forward warily, feeling power radiating off the girl. His hands held in front of him as the universal surrender sign, he spoke to her.
"I'm Sam and that's my brother Dean. This is Cas. We're just here to talk to Chiron." He said, tipping his head towards Cas. The girl's eyes narrowed at she glared at them, her beads falling out of her shirt.
"Cas, as in Castiel?" She said, her dagger digging ever so deeper into Dean's neck. Dean breathed in ever so slightly, trying to loosen her grip but she just pushed the blade in farther.
"Yes. You have heard of me?" Cas stepped past Sam, tilting his head at her. The girl cursed under her breath in some foreign language, one Cas recognised as Ancient Greek. She stood up and pulled Dean to his feet, despite being far shorter. The blonde sheathed her glowing bronze dagger and turned to the trio, where Dean was checking his neck for blood.
"Sorry about that, but you did just kind of invade in my home." She shrugged, her face cold as she stepped towards them.
"My name's Annabeth Chase. I'm the daughter of Athena."