A/N: This is a crossover of the books series', Pegasus by Kate O'Hearn and Percy Jackson: Heroes of Olympus by Rick Riordan. So... yeah. Also, sorry if my spelling for names sucks. On with the story!

Disclaimer: I do not own Percy Jackson or Pegasus. I only own my own characters and the plot.

Olympus(Third Person)

"Gah!" Apollo groaned. It was getting worse. Ever since Apollo died in the Roman world, well, things haven't been the same. Apollo has been in great pain, pain that no god should ever feel. But Apollo wasn't the only one. Hermes and Hephaestus were also hurting, for their Roman forms have died as well, but no one was hurting as greatly as Apollo, for his Roman form was a sheer mirror image of himself in Greek.

"What do we do? They get worse each and every day that passes," said Artemis, Apollo's twin sister. Even though on most occasions Artemis wouldn't give a skatá for Apollo's well being, she was frantic and worrying deeply for her twin brother.

"There is only one thing we can do," said Zeus with an unsteady voice. He too was concerned for his children and siblings. And as his Roman side is dying, he was hurting as well. "We must inform the demigods and ask them to send their best. There is a war going on. I can sense it. They are at war with an army unlike any other. They are facing the Nirads, ruthless killing machines with four arms whose only desire is to kill. We must send a quest immediately. We will send the chosen demigods through the Solar Stream to the other Olympus to try and stop Saturn's weapon. A weapon that causes the Olympians to age. The Nirads are trying to age us to our death. I fear that Pegasus will also soon die. The loss will be very great indeed." Zeus's voice was so grave, no one dared to oppose.

"Then we shall send the quest. Who shall go and fetch the demigods?" asked Athena.

"Hah. I wanna go. Maybe I can beat that little punk up before they go..." said Ares dreamily. He SOOOO wanted to get revenge on that brat.

"NO!" The Olympians screeched as one. The knew that no matter what, they could NOT let Ares go, he was just too... unreliable.

"I will go," came the soft voice of Artemis. She couldn't bear it any longer. She knew that she was the one who must go and fetch the demigods. Athena nodded.

"Yes, it would be a wise choice to send Artemis. Go, sister. And do not fear. We will watch over him. Apollo will be fine." Artemis nodded and with a flash of golden light, she was gone. Zeus made an audible sigh.

"I hope you are correct, dear daughter."

Camp Half-Blood(Percy's POV)

"My grandma, oh yes, my grandma, every day now, puts on armor and kills. A fighting machine she really is so stay out of her way? I will." everyone sang. We were in the amphitheater and doing out nightly sing along. Everyone was having an awesome time when a golden light began to fill the room. Everyone knew that this meant the arrival of a God or Goddess so we all knew to look away and shield our eyes. When the light died down, the God that was standing there was at the bottom of our expectant list.

"Lady Artemis! What an honor. How can we be of service to you?" asked Chiron. Of course. Leave it to Chiron to make things sound cheerful. Even when the look on Lady Artemis' face clearly stated otherwise.

"I have come with the news of a quest. The Gods themselves have commanded it. You all know of the Romans, correct?" she addresses the room. Everyone nodded. We all knew of Camp Jupiter. In fact, it's Praetors were currently in the amphitheater. As if to state that exact point, Leo bolted up and shouted,

"YUP! IN FACT, PRAETOR RAMIREZ IS IN DA HOUSE! TEAM LEO!" then, of course, everyone shouted,

"SHUT UP, LEO!" and we all laughed. Lady Artemis continued once Leo was seated.

"Well, they are only one set of mythological beliefs. There is another set, one that is preparing for war as we speak. They are facing an army that even the Gids cannot defeat. In fact, the Roman Gods Vulcan and Mercury have already died. Alongside my brother and Jupiter is dying as we speak." everyone gasped at this. Apollo? Dead? How did we not know of this earlier? And Gods couldn't die. Could they? My thoughts were spoken by somebody else.

"You mean Hephaestus, Hermes, Apollo, and Zeus? That is not possible. For one, if they were dead and dying, then the campers descended from each respective God would know of it. And two, Gods can't die," inferred(Whoah! Annabeth is rubbing off on me!) Fiona, daughter of Hades. Artemis only sighed.

"You are partially correct. The Gods are dying the Roman world so technically, their Roman forms have died. But the Greeks are still suffering. And though, yes, Gods normally can't die, the enemy has obviously somehow found a way to surpass this rule. And for that, this quest has been decided. 20 children of the Gods shall go to the Roman Olympus and later on go to Titus, which is basically the Roman equivalent to Tartarus, where the battle will be held later on." she let that sink in.

"NO WAY!" Annabeth and I screamed in unison. NO WAY were we going back to Tartarus. We've had enough of that place already. Another sigh from Artemis.

"Do not worry. It will not harm you in any way. This Tartarus is different. It is an actual prison world and nothing there can harm you. Except for the monsters, of course. The air is breathable and the ground is sufficiently smooth. And Tartarus' atmosphere does not wane your energy," Artemis explained.

"But we just finished a war with Gaea! Can't the Gods handle this one?" I asked.

"Unfortunately, no, Perseus. 20 children of the Gods shall go and those 20 have already been decided. If your name is called, please come forward to the center stage. Once all 20 are gathered, we will leave for Olympus. Perseus Jackson!" of course. Why not send me on another quest? It's not like I've already been through two wars! I sighed and got from my seat, making my way to the central stage. Artemis continued.

"Annabeth Chase! Jason Grace! Piper McLean! Leo Valdez!-" she was cut off as Leo spoke up.

"Oh yeah! Bad Boy Supreme, Supersized McSchizzle, Supreme Commander of the Argo II, all da ladies' man is in da house!"

"SHUT UP LEO!" everybody, including myself, yelled. Leo just smirked and waltzed over to me. I shook my head. Once again, Artemis continued.

"Frank Zhang! Hazel Levesque! Thalia Grace! Nico Di Angelo! Reyna Avillo Ramirez Arellano! Lou Ellen! Fiona Liu! Jayden Pepler! Renee Sun! Travis and Connor Stoll! Will Solace! Chris Rodriquez! Clarisse La Rue! And lastly, Tyson of the Cyclopes Army!" Everyone was present so we obeyed our given orders and walked up to Artemis.

"Now, please link hands." We did and with another flash of gold, we disappeared, on our way to Olympus, on our way to new Romans, on our way to another war.

A/N: Right. So now that that's done, I think you might want to know the Goldy parent of the demigods, just in case. Especially my own characters, Fiona, Jayden, and Renee.

Percy: Son of Poseidon
Annabeth: Daughter of Athena
Jason: Son of Jupiter
Piper: Daughter of Aphrodite
Leo: Son of Hephaestus
Frank: Son of Mars
Hazel: Daughter of Pluto
Thalia: Daughter of Zeus
Nico: Son of Hades
Reyna: Daughter of Bellona
Lou Ellen: Daughter of Hecate
Fiona: Daughter of Hades
Jayden: Son of Apollo
Renee: Daughter of Athena
Travis: Son of Hermes
Connor: Son of Hermes
Will: Son of Apollo
Chris: Son of Hermes
Clarisse:: Daughter of Ares

So that's all folks! Until next time! Peace out.

DamHotDog