This chapter is dedicated to _-AmyRoseFoster-_  for guessing the correct answer first at the bottom

Percy POV
Tartarus seems to not be enjoying my torture that much anymore which is both a relief but is sad at the same time. His visits are less and less frequent until its once a month now.
He told me his plans are working out well but I don't believe him. As much as I want to believe that the gods are dumb, they aren't. They would have kept an eye on him by now. But Tartarus is no kindergartner too. He might have done some... Oh I dunno... Magic? Life is turning too British for me to like it A/N no racism intended due to those harry potter movies. Compared to my life, his makes him look like he just sat there the whole time. Oh big deal, he was hunted from birth. So? I was wanted killed from birth. And for the past 120 years I have been in this god forsaken place. Oh sorry. I was rambling again. This place gets to me.

5 Tartarus years later(1 mortal month)

I have been exploring Tartarus and I have found a bunch of cool places. I found a palace belonging to some giant. Something like enchiladas. His name sounds familiar, maybe I have heard about him. Anyway, the first time I went there it was empty so I raided his bedroom and put some graffiti on the walls for whenever the owner got back. Then I visited about a year later. There he was, sleeping on the bed, my graffiti washed out. I was angry at that, so I walked up to him, climbed onto his chest, and stomped my feet. It wouldn't have hurt, but it was enough to wake him up. He looked around, half asleep, then his eyes focused on me, he was about to yell, no doubt calling for help, but I stabbed through his neck, cleanly cutting his vochal cords and hopefully stopping him from respawning for a while. Goodness he is like one of those mobs in Minecraft, they always keep respawning, and its so similar. In fact, I wouldn't be surprised if the creator was a demigod too.

Olympus POV

Hermes jogged over and announced a rally of monsters that just appeared out of nowhere. Zeus sent Ares and Artemis to take care of them, then immediately sent Poseidon, Apollo, and Artemis to take care of the other group that appeared after the first. As he gave orders many more appeared all over Manhattan. He divided the rest and went with Hermes, Hades, and Hera to take take care of the largest that was heading for Olympus.

Unknown POV
Two figures stare at a video playing in the air, like an invisible television screen
'So the gods have decided to divide and conquer. Risky. They leave air defences unarmed. That is forgetful. Not as worthy of an opponent as Kronos said. Maybe it is true. Maybe Perseus is their only chance of survival. And with him in my care, let's see how they survive.' The darkness falls away, revealing Tartarus sitting by another hooded figure, with a boy in a cage somewhere under them. A boy with black hair and green eyes.

Percy POV

Its funny, but I'm actually enjoying Tartarus right now. Well not the visits from Tartarus himself but the house, farm, drakon killing, and power practicing. I managed to create a solar absorber and also summoned a lump of metal, shaped it into a ball, and infused apollos light powers into the ball. Then I placed it next to the solar absorber and now I have unlimited electricity. I made myself a computer that runs faster than any other one in the world. The WiFi sucks though. But I have realized that, using the computer also makes monsters come to me, and now I have killed so many that they fear me. Well most of them though. The others still are dumb. Anyway, I found a cave, and covered it with some really hard stuff, and put a bunch of layers on it. Its huge too. Its my testing room. When I get a new idea for a power(don't trust Annabeth, I have a real brain not a seaweed one) I can test it here, and that way, if it goes wrong, then the place doesn't explode on me. And it hasn't!  Well, not yet. I have thought a lot about how my friends are, and how I never told my mom goodbye.

Time break for random info

I figured out that even though I don't age, since I have made myself look 23, I look ruggedly handsome with a beard. I can easily force grow one. And that's what I have now. A beard.

Time rewind to before random info

I had also tried making a device like the one Leo told me about, the one that makes a hologram like annabeths shield. It works for a few seconds, showing me scenes of a camp half blood that looks bigger, and very different, yet familiar. Other times it shows me pictures of my mom, looking happy as she works. That makes me happy too, the fact that she moved on. Other times it shows me, my friends, laughing like normal mortals, carefree, and it makes me happy, jealous, and sad at the same time. I wish I could enjoy like that. Though it also brings the thought of how they believed Zeus about me. Each time, I see the scene for about 5 seconds, until the machine sparks, them turns off, leaving me to wonder if I should make a new one or if I don't want to see the upper world anymore. But everyday, curiosity gets the better of me, and I end up building a new one, only for it to end up in the same fate as the others. Lately, I have been seeing more depression in camp half blood from the short scenes. I see monster attacks, less playing, and more working. This only means one thing, and it explains why Tartarus hasn't showed up for the last 2 months. The war has begun,and without me, the Olympians can do nothing but perish. I don't know if I should be sick or rejoice, but I didn't have time to decide because I just saw some blinding white light, then I got hit out from behind. I then saw a face that looked familiar, and I couldn't place it. I guess I hadn't seen that face in a while, I guess. Then I realized. My facial features contorted into a scowl, before everything turned black.
Question: Where did Percy meet Rachel Elizabeth Dare?