They appeared in Nico's room in Hades's palace.

"Woah, Nico! Your room is awesome!" Percy said admiring his room.

"Thanks. But just so you know there are only two simple rules. 1) Don't bother my dad. And 2) Don't break anything." Nico said as he plopped down on the sofa.

Percy nodded his head. "Sounds simple enough." He was still maveling the room.

The room was fairly big, but it had more things than a regular bedroom did. On one side there was normal bedroom stuff, like a bed, closet, and bathroom. But on the other side it was like rest of a house. There was a TV, a sofa,a rug, and a mini fridge.

The room had a color theme of black, silver and bronze. He walked over to the window that overlooked Elysium. "So what kind of things should we do, Nico?"

"Glad you asked." he grinned. "There are a lot of halls and secret passageways that can be explored."

Percy smiled, "We're going on an adventure!" he said. Nico opened the door and they entered the sprinted down the halls and Percy followed.

Nico stopped in front of wall. He pressed put his hand against the wall and the disentigrated like smoke. "Well?" Nico turned to Percy, "After you." he said.

Percy was right to be suspicious. In the home of a god who hates you anything could happen.

Percy stepped through and saw a spiral staircase going up and it was lit with torches that burned with the same green fire that was at Nico's cabin. He went up the stairs with Nico right behind.

They climbed for what seemed to be several stories when he found a trapdoor and ladder at the top. He turned to Nico,"What's up there?"

"Open it and you'll find out." Percy opened the trapdoor and climbed the ladder.

He moved out of the way so Noco could get up and he looked around. They were at the top of a tower that mostly overlooked Asphodel and you could see some of Elysium and the Fields of Punishments.

"Woah."

"This tower is really secret," Nico said "I kinda found it by accident."

"Really? How?" Percy asked him.

"I kinda leaned against the wall and then it gave way and I landed on back." Nico admitted. Then he grumbled, "And it left a bruise too."

"Did you yell in surprise and terror?" Percy demanded dramatically.

"I might have. But only in surprise. I wasn't scared." Nico defended himself.

"The mighty Nico, master of grace!" Percy said laughing.

"Shut up," he grumbled.

They were about to leave when an Iris message appeared infront of Percy. The call was from a distraught looking Annabeth.

"Percy! Where have you been?" she demanded.

"I'm in the underworld-" but she interrupted him.

"What did you do this time?" Nico snickered. Annabeth automatically assumed he got himself into some sort of mess.

"Let me finish, I'm in the underworld with Nico."

She paused. She crossed her arms and asked, "Why?"

"Because he wanted to have a sleepover." Percy told her.

She looked at him processing what he had said. "Okay. But I went to your house earlier and you weren't there!" her words were starting to speed up with worry and anger. "I couldn't talk to your mom and Paul because they weren't at home. Then I worried that you went missing again because you should've been home. You should've told me you were going to the underworld!"

"It kind of happened last minute." Percy calmly told her. "And I didn't know you were coming over."

"I was going to surprise you." Annabeth huffed.

"Um, sorry?" Percy said weakly. "Don't worry I'll be back tomorrow."

"You'd better," and with that she swept her hand through the mist.

"What was that?" Percy asked.

Nico shrugged, "Who knows?"

They left the tower and were back in the halls.

Percy looked around the palace and commented, "This place is pretty nice when you're not on a quest or life threatening mission."

Percy looked at the polished marble tiles and had an idea.

"Hey Nico, are you wearing socks?"

"Yeah, why?"

"Well what's the perfect thing to do with a slippery surface and socks?" Percy grinned.

"Percy you're a genius." Nico said pulling off his shoes.

"Really?" Percy asked as he did the same.

"No." Nico said seriously but with a grin.

They tossed their shoes to the side of the hall and started running. They slid,slipped, and fell for an hour.

They put their shoes back on and headed to Nico's room. They plopped down on the sofa.

"I'm hungry. How about you?" Nico asked.

"Yeah," Percy agreed. "Wait, what about the whole eat-food-in-the-underworld-then-stay-forever thing?" Percy asked Nico.

"That's only for food made or grown down here. For example the pomagranates in Persephone's garden. If you bring food down here it's fine." Nico told Percy.

"Even if it was for all food Dad would let you leave. He hates you." He tried to reassure Percy.

"Yep, the Lord of the Dead and the Underworld hates me. Guess that has some advantages." Percy joked.

Nico walked over to the mini fridge and pulled out a couple of sodas. "So the soda's fine since it wasn't made or grown down here." He said and gave Percy a soda.

"I'll get a pizza really quick." Nico disappeared into the shadows.

When he returned with two pizza boxes and a bag of chips. "I'm baaack." he half sang.

"Why did you get two pizzas?" Percy asked. Nico looked at him confused. "Not that I'm complaint or anything!" He defended. "Just curious."

"Percy, you could eat everything the pizza place had and still be hungry. So I got you your own pizza." Nico gave him one of the boxes.

"Wanna have a movie marathon?" Nico asked walking over to the TV. "Sure."

Nico turned the TV and opened a drawer full of inaccurate Greek/Roman movies. He picked one up, "Should we laugh and criticize these, Percy?" he said with a small smile.

"Why not, little cousin?" he replied. Nico huffed, "I'm older than you!"

"Technically," Percy pointed out. "Doesn't matter!" Nico said and began to play the movie.

As the credits began to play Nico dragged all the blankets and a few pillows off his bed and dumped them in a pile infront of the TV. He crawled inside the pile and grabbed his pizza.

"Nico what are you doing?" Percy asked from the couch.

"Eating, duh."

"I mean with the blankets." Percy said.

"I have created an ultimate pile of comfort. It's warm and soft and amazing." Nico said like it was a major accomplishment.

"You are such a little kid sometimes," Percy said with a small laugh.

"Shut up." Nico grumbled and returned to the movie.

Around 1:00 AM both the boys were asleep. Percy fell asleep on the couch and Nico in the mass of blankets and pillows.

Nico woke up around 10:30. He sat up and noticed Percy was still asleep. He got up and went to wake him up when he heard him muttering things in his sleep.

Some of the things he heard were: "No Apollo, you can't ride the dolphins. . . Hawaiian cherubs. . . Annabeth your hair smells like Popsicles. . .

Nico covered his mouth to prevent himself from laughing. He got his camera and filmed the rest of Percy's mindless conversation.

". . . I would love some tea Mr. Penguin. . . Not in the face!. . . Zebras like to go to Vegas. . . You want me to be President? Well okay then, . . . Are the kiwis on sale today?. . . "

After a few more minutes Nico decided to wake Percy up do he wouldn't have as much embarrassing footage.

"Percy," Nico said.

"Percy," he repeated louder. That didn't work so he shook his shoulder. Percy just weakly swatted his hand away. Nico rolled his eyes.

He grabbed Percy's shoulder and rolled him off the sofa. "PERCY!" he shouted.

"PURPLE CATS!" Percy yelled when he hit the ground. "Huh?" he blinked and looked around. "Hey, Nico." he greeted.

"You talk in your sleep."'Nico told him.

"What? No I don't!" he protested.

"Dude. I've got evidence right here" Noco said and tapped the camera. "And why was Apollo trying to ride dolphins?"

Percy groaned. "That was a weird dream." Percy stood up.

"Amd you also mentioned something about Annabeth's hair smelling like Popsicles."

Percy's face turned red. "I said that?"

"Yep. Now get your stuff we're having breakfast at your house."

"Why are we eating breakfast at my mom's house?" Percy asked while getting his backpack.

"Because she makes the best food in the world! Duh!" Percy rolled his eyes at Nico.

"Okay I'm ready let's go." Percy told him.

Nico snapped his fingers and they were off to have a delicious blue breakfast.

A/N: ERMAGERDS. I haven't posted in a while. Sorry! But I think this chapter is pretty good. And while I've been writing this I've had a lot more ideas for chapters. Tell me what you think of the chapter. Submit prompt words/ideas and thanks for reading! PS can you guess where I got some of the random things Percy was dreaming about? I made some up but not all. . .