A/N This is my first fan fic, and I plan to make it a good one and a long one. I will try to update with a new chapter daily, but I can't promise anything! Please leave a review with how you think it is, but please don't hate. I can take criticism, but writing "OMG, I HATED THIS SO MUCH YOU SHOULD KYS" is not gonna help my writing. Thanks.

I am not Rick Riordan, so all of the characters and the past plot belong to him. This is set after The Blood Of Olympus, but somewhere in the middle of Trials of Apollo – Leo is back with Calypso but Apollo etc. isn't mentioned.

Chapter One: Impossible

Annabeth's P.O.V

"He's gone again?" Annabeth exclaimed, terrified by the idea.

"I'm afraid so. He really needs to start telling us when he's going on another trip," replied Leo. This was impossible! Percy was gone, again! Annabeth was going to go mental at the gods if this was because of them again. Suddenly, she turned and stormed up the hill towards the big house.

"Where are you going?" Leo asked.

"To give the gods a piece of my mind!" she yelled back down the hill. She heard footsteps run up behind her, then fall in to rhythm with her's.

"I need to see this," Leo said.

(Later)

"Chiron, can I iris message Olympus?" Annabeth shouted in to the house as soon as she was in the door.

"Why, may I ask?" He replied, coming out from the living room in his wheelchair.

"Percy's gone again," Leo said, answering any other questions Chiron may need to ask.

"I wouldn't advise getting them on your bad side if it isn't because of them, but I'll let you do it round behind the back of the house – we don't want any other campers worrying. Here's a drachma. I doubt I would be able to stop you." Chiron flipped a drachma towards her, which Annabeth caught with ease.

"Thank you, Chiron," she turned to walk out, and made her way back down the few steps that led down from the front door with Leo trailing behind.

"I'm gonna grab Jason and Piper. They're gonna want to see this," Leo said, sprinting down the hill before Annabeth could say anything against it.

(Later)

"So what exactly has happened?" Jason asked after he and Piper had been pulled up the hill by Leo.

"Basically Percy wasn't in his bunk this morning, but we know he's gone because there was actually a note saying 'yes, he's gone', as if to mock us. Annabeth says this is exactly what happened last time, when he was taken to New Rome-" Leo started, but was cut off by Annabeth.

"Yeah, but you didn't tell me about the note. We could get one of the Hecate campers to track whoever left it," Annabeth said hopefully.

"Nah, sorry. As soon as I touched it, it just totally disappeared. Like, poof! Gone," Leo told the group, with a hand action Annabeth didn't really think was necessary. Everyone shared confused glances. That had never happened before, Annabeth didn't even know how that could work. She knew how to make a message go up in flames, or wither into ash, but to leave no trace of it in the first place? That would be nearly impossible, or at least incredibly difficult.

"Let's not worry about that at the moment," Piper broke the silence. "Contact Olympus and see if they have any idea what's happened." Annabeth turned the hose on that was attached to the back of the big house, and handed it to Leo who placed his hand over it in such a way that made it spray a thin screen of water. After checking the sunlight was definitely causing a rainbow, Annabeth threw the coin into the spray, and it disappeared immediately.

"Show me the gods of Olympus in the Empire State Building," she said. She wasn't in the mood to be polite.

The water shimmered and rippled, until it became a view Annabeth knew all too well – after all, she had been the one to design and decorate it. The hall was large and made from white marble, with huge Greek pillars holding up the ceiling. There was a small hearth burning in the middle of the room, with a kindly looking young girl tending to its brilliant flames. But they all knew that Hestia wasn't just a small girl. Round the hearth stood twelve towering thrones, each personalised for each God. The newly added 'goth one' – as Annabeth liked to call it, but would probably be killed immediately for calling it that – was empty, as Hades was more than likely downstairs, sitting on his Underworld throne. Dionysus's was also empty, as he was still trapped down at camp half-blood. All the gods looked up when the group appeared, but it was Athena and Poseidon who seemed the most intriguied.

"What is the problem, daughter?" Athena asked.

"Percy's gone again, and I was here to see if it was any of you who was responsible for it. Again," Annabeth added, staring and locking eyes with Hera.

She chuckled. "Although I thoroughly enjoyed messing with you mortals, I have to say it wasn't me this time," Hera smiled venomously. Poseidon seemed to be freaking out, but was trying to keep calm and collected in front of everyone. The gods couldn't play favourites, but it was very obvious some had their's. Annabeth didn't realise actually how much Poseidon cared for his mortal son.

"So none of you have any idea where he is?" Annabeth's voice wavered slightly as she asked the question she already knew the answer to.

"I truly wish I did," Poseidon piped up. "But I'm sorry, I have no idea where he is. Even if he were dead and in the underworld," (cue shivering from Annabeth), "I would be able to tell where his soul was. But, unfortunately, I can't sense it at all. Which only suggests one thing," Poseidon finished quietly.

"He's in Tartarus again," Annabeth whispered, and Leo cut off the hose.

Percy's P.O.V

He woke with a start, and tried to turn over in his bed. When he realised he was strapped down, he knew something was wrong. Percy was observant in that way. He noticed the poisonous air, stinging his throat, and the hot climate around him that was making him sweat. But what scared him the most was the dripping I.V. that was attached to a vein in his arm. Percy started to thrash, pulling at the straps tying him down. He even tried to summon water to pull the I.V. out of his arm, but found his powers useless.

"Ah, he awakens. Stronger than I thought you were, that drug was supposed to keep you asleep for several more hours. This just makes it all the more perfect." Percy knew that voice, and it sent chills down his spine, or more like buckets of ice all over his body. He immediately stopped moving, terrified that someone, even him, had managed to get him down here.

"Oh? You recognise my voice? Well, I guess it would be difficult to forget," Tartarus came into Percy's view. His face made him lose his happiness, hope, any positive emotion that may have been able to scramble to the surface and reach his face was sucked into the swirling abyss that made up the front of Tartarus's head.

"Wh-what do y-you want-t from m-me?" Percy asked, dreading the answer.

"Oh it's not what I want from you. It's what I want to give you," he responded.

"Wh-what?"

"That I.V. is currently dripping my own blood into yours. By the time it's done, you'll be more powerful, even more than you already are – which I must say is very respectful. The only thing you may not like is that you'll only be able to do what I want you to do. Like sacrifice your blood for me to awaken and seek revenge for the death of the Earth Mother. Or help me get your other friends of the big three to sacrifice their's too."

"You mean Jason and Nico?" But Jason's Roman," Percy managed to sum up the courage to not stutter, but it took strength, of which he had very little of.

"Roman, Greek, what does it matter? You'll all worship me soon. Now, the last part of the transformation is about to happen. I warn it will be painful, but worth it." He didn't seem too interested in Percy's pain though. Suddenly, excruciating pain seeped into his eyes. Percy screamed and thrashed, as his eyes felt like they were slowly burning from the rims inward. His vision started to fade, pinpointing into a tiny dot where he imagined his pupils would be on his eyes. Then daggers were stabbed into them, cutting off his vision completely. Abruptly, he saw again, but this time as if he were looking through night vision goggles. He had no doubt that would change when he got into the light, though. The pain had stopped.

"Is the process done now, Perseus?" Tartarus asked, as if to test Percy's ability to talk.

Then, against his own will, Percy responded. "Yes."

"Perfect."