Alright guys, this is Heroes of Olympus: Heart of a Hero. It's the sequel to my story Heroes of Olympus: Journey to Greece. If you haven't read that story, I suggest you go back and do that before you read this one. But still read this one ;)

Enjoy =)

Prologue:

Thalia looked down the hill at the peaceful valley below. Not much had changed in the past eight years. The scenery was still the same, with the same activities and same old cabins. What had changed were the campers. In the past eight years, Camp Half Blood had almost tripled its population. And almost all the campers were new. At least they were to Thalia. These weren't the same demigods she had fought side by side with in the wars. No, this was the next generation. A generation that at one time, they hadn't been sure if it would come. But now they were here, and they were destined to live in peace… as much peace as demigods could.

"I remember back before the civil war," Thalia's companion (and best friend) Adria said. "This looks a lot like it did then. Except the Big House was white."

Thalia laughed. "Isn't that, like, the only paint color they had back then? All the fancy farm houses were white."

"Or brick," Adria added. "But yes, white was the most common color for houses then."

"I think it still is," Thalia muttered. Then she smirked at Adria and said "Probably because it goes so well against the sky."

"No, it is best with the sea," Adria argued.

"Only if you have a beach side house," Thalia pointed out. "And not a lot of people have those. But yet everyone's house has some form of sky backdrop."

Adria mumbled something inaudible; Thalia guessed it was something in Latin about stupid daughters of Zeus. Which, of course, only made Thalia laugh. She and Adria were probably one of the oddest pairs of best friends. Thalia was the Greek daughter of Zeus, and Adria was the Roman daughter of Neptune. They were both Hunters of Artemis/Diana, and both first lieutenants. No one had expected them to get along, but they did.

"Come on, Grumpy Gills. Let's go find Chiron, or someone else we actually might know." Thalia started running down the hill, Adria following close behind.

It was a quiet day a Camp Half-Blood. With the older kids training, Emily Williams and her students were undisturbed. Emily loved working at Camp. Even though she had grown up at the Roman demigod camp, Camp Half-Blood was still one of her favorite places in the world.

Emily had been taking her young class for a walk around the camp. The little kids loved that. They were standing at the base of Half Blood Hill, and Emily was telling the kids what the gold thing hanging from the tree branch was.

"Miss Emily?" A little girl asked, pulling on the tail of Emily's t-shirt.

"Yes Crystal?" Emily said, bending down to look the small girl in the eyes. Crystal was a daughter of Poseidon, and like the majority of Emily's students, was six years old. "What is it sweetie?"

Crystal pointed up to the base of the tree. "There are two girls up there," she said in her sweet six year old voice. "I've never seen them before. But they're coming towards us. Who are they?"

Emily looked up to where Crystal had pointed. A smile spread across her face when she recognized the two girls walking down the hill. "That's Thalia and Adria," Emily explained. "They're really good friends."

As the two Hunters reached the group, Emily could see the smiles on both of their faces.

"Hey guys," Emily said. "What's up?"

"Oh, nothing much," Thalia said. It was odd for her to see Emily so much older than her and Adria. She had to be about twenty-four by now. "We were in the area and decided to swing by. How's it going Emily?"

"Not bad. You'd guys won't believe how well the Roman and Greek demigods get along. It's like we were never separated."

"Really?" Adria asked. "I never thought it would be possible."

"Me either," Emily agreed, "But apparently we were wrong."

That's when another teenage girl ran up to Emily. "Hey Emily, uh Chiron sent me to get you. He says that Trish and Tina are fighting again."

Emily groaned. "Thanks Maya. I'll go straighten it out."

Maya ran off and Emily turned back to the Hunters. "Trish and Tina are two of my sisters. They're twins and fight all the time," She explained. "Could you two watch these guys till I get back?"

"Sure," Adria said.

"Uhh," was Thalia's response.

"Thanks guys," Emily said. "They should be fine; these are probably the best kids at camp."

She ran off leaving Thalia and Adria to kid-sit.

Thalia looked at the small group. There were six students, age's six to eight. "So," Thalia told them. "What do you guys want to do?"

"Well, whenever we stop here, Miss Emily usually tells us a story," Crystal said.

"A story?" Thalia asked. She whispered to Adria "I'm not good at telling stories."

"What kind of story would you like to hear?" Adria asked the kids.

"A love story!" a pretty little girl said.

"No way!" a bigger boy said. "It needs to be a war story! It needs to have a lot of action!"

"Yeah," another boy said. "But it needs to be funny too."

The two Hunters thought for a moment. Then Adria had an idea. "Why not tell them about the fight in Greece?" she asked Thalia.

"Ooh! Good idea!" Thalia said. Then she turned towards the kids. "Alright guys," she said. "We've got a really good story, so why don't we all sit down and we'll tell you."

All the students sat down in a circle around the two Hunters. Once everyone was settled, Adria started the story.

"This is a true story," she began. "It happened not too long ago; about eight years, to be exact."

"It's about seven of the greatest heroes that have ever lived," Thalia said. "These heroes went against all odds to save the world."

"And even with everything going against them," Adria continued. "They were brave and courageous enough to keep fighting."

"Who were they?" Crystal asked curiously.

"Who were they?" Thalia said with a smirk. "Well, tell me this… have you ever heard of someone by the name of Percy Jackson?"

"He was a son of Poseidon," Crystal answered. "Right?"

"Right," Thalia said. "He was one of the seven; maybe even the most important."

"I wouldn't go that far," Adria said. "Jason and the others played very important roles also."

"Who's Jason?" one of the kids asked.

Thalia grinned. "Jason's my brother. A son of Jupiter. And you're right Adria; the others did all have their own special roles to play. For some, it wasn't quite the role they had imagined."

"And for others, it was a much greater role than they could ever have dreamt of," Adria said.

"But who were the other five?" Crystal asked.

The other kids all shouted in agreement.

"Well," Thalia said. "We've already mentioned Percy Jackson, and my brother, Jason Grace. The others weren't children of the Big Three. And they were probably the one of the first groups of mixed Greek and Roman demigods."

"And the most corporative. I've never seen a group get together as well as they did," Adria said.

Thalia nodded. "Percy was Greek, and Jason was Roman. But Queen Hera pulled a stunt and switched the two of them. As you can probably guess, that went over incredibly well."

"Right," Adria said, giving Thalia a skeptic look. Then she turned back to the students. "Two of the other five were girls from the Roman camp. One was a daughter of Mercury, Halley Cabrio. The other is a daughter of Apollo, Reyna Matthews. She is also a Hunter, like us."

"Yep, and the other three were all from Camp Half Blood. One, a daughter of Athena named Annabeth Chase, was my best friend. She's Percy's girlfriend. Then there's Piper McLean, a daughter of Aphrodite. She was Jason girlfriend. And then there was Leo Valdez, a son of Hephaestus. That's all the heroes," Thalia said. "Have you guys heard of them?"

The group all had mixed expressions. "I don't think we have, Miss Thalia," Crystal said.

"Oh, well, that's ok," Thalia said. "We're going to tell you all about them."

"Yes," Adria said. "So why don't we start when they arrived at Greece…."