"What kind of hotel is this?" Annabeth wondered aloud, cautiously stepping in. It seemed to be abandoned, except for the lady at the desk who wouldn't stop watching them.
"How am I supposed to know?" Hedge grunted. "She doesn't seem like a monster, but..."
"Everything gets mixed up underground." Percy finished his sentence grimly. "Grover told me that. A few minutes later, I fell off the St. Louis Arch."
"Y'all aren't helping the vibes." Leo muttered, tapping his foot nervously against the tile floor.

It was at this point that several popping noises sounded behind the group, and half of them turned around and drew their weapons, only to be facing several teenagers like themselves, all wearing similar belts. They drew their sticks simultaneously, and Reyna blinked. Then she howled with laughter.

"Must be a group of muggles," a boy with freckles and red hair remarked. "Nothing to see here. Let's leave."

They all closed their eyes and concentrated, but nothing happened.

"Wait," Leo said, as if just now processing what was happening. "What the heck is a muggle?"

"A non-magical being." The youngest red-headed boy explained. "You are ordinary folk."

"Ronald!" A bushy-haired girl slapped his shoulder. "You don't just go around giving out that sort of information!"

"On the contrary, we're demigods." Annabeth shook her head. "What are you doing in America? Just wondering, since you have British accents."

"I have magic," Hazel objected. Pointing to the ground, she knitted her brows in concentration, and a yellow gem popped out of the ground.

"You look old enough to be in Hogwarts, then," a curly-haired girl said confusedly. "By the way, how old are you guys?"

"Seventeen." Percy and Annabeth said in unison. After a small staring contest, Annabeth continued. "I'm Annabeth, he's Percy. We're dating."

"Sixteen. I am proud to call myself Jason's girlfriend." Piper smiling, looking at his face.

"Seventeen. Same, Pipes." Jason put an arm around Piper.

"I'm supposed to be eighty-three." Hazel said monotonically. "But I'm fourteen. Hazel Levesque."

"I'm supposed to be seventy-nine." Nico shrugged. "But I'm fourteen as well. Nico di Angelo."

At that name, everyone noticed the desk lady shiver a bit.

"Why are your ages not in the correct positions?" The curly haired girl asked.

"Long story." Frank supported Hazel, who was distracted by the desk lady (who was really just a teenage girl around her age). She had two books stacked on top of each other, on the calling pages. There seemed to be something off about her. "Anyway, I'm Frank, seventeen, dating Hazel."

The desk girl nodded to herself, smirking. Hazel, ever so slightly, shifted her hand to her sword hilt. Just in case.

"Reyna, seventeen, praetor of New Rome." Chances were nobody would get that reference, but it sounded cooler than her singleness.

"Leo Valdez, sixteen, McShizzle." Leo introduced himself with a smirk.

"Calypso." The goddess said simply.

"I'm Harry Potter." Said the boy with glasses. "Seventeen."

"Gred and Forge." Said Fred and George in unison.

"Fred and George." The curly haired girl corrected them patiently. "They're nineteen. I'm Hermione Granger, seventeen."

"Ron Weasley." Said another red-haired boy. As they said their names they sheathed their sticks.

"Draco Malfoy." Sneered a blonde boy in the back nobody had noticed.

The others in this odd grouping reacted as if they had just been notified of a rat in the room. Hermione made a face, Harry and Ron gripped their sticks, and Fred and George - who were obviously twins - gripped their bags - which, the others noted, were bulging with unknown things.

"Well then," remarked the desk girl as she abruptly stood up and made her way towards the groups, "you seem to all be acquainted, don't you?"

"Except you. We have no idea who you are." Hazel pointed out, instinctively stepping in front of Frank.

"I am... Well, I have a lot of names, and a lot of them are ones you might recognize. For now, know me as Selene."

"Selene?" Annabeth voiced. "As in, Titan of the Moon Selene?"

"Sort of like that." Selene smiled. "I have called you both here from different worlds."

"Um, I'm from Earth." Ron said, scratching his nose.

"So are we." Percy protested.

"That's not what I meant." Selene sighed. "Percy Jackson, in the world as you know it, Greek and Roman myths are true. Harry Potter, in the world as you know it, witches and wizards prowl the earth, mostly going undetected. And..." She looked around, puzzled. "Where is everyone else? Didn't I put..." She walked back over to her calling pages and stared at the two books. "Oh, whoops." With a chuckle, she took two DVD's and placed them next to the two books. Much to the others' dismay, an odd sound filled the air that even Leo couldn't place, and Percy dragged Annabeth out of a sudden shadow. A moment later, a blue police box appeared, the door opened, and a sort-of handsome face peered out.

Harry gasped. "Bar... Bart... Petrificus Totalus!"

A jet of green light emitted from Harry's stick (which the Jackson group was beginning to realize was actually a wand) and shot towards the man who just walked out of the police box. However, he pulled out a screwdriver and vaporized the light in midair.

"My name is neither Bar or Bart." He said. "I am called The Doctor."

"Doctor... Doctor who?" Annabeth asked. Doctor Bart?

"Exactly." The man replied.

"I'm Rose." A young woman spoke, stepping out of the police box. "And this is the TARDIS."

"What kind of a machine-" Leo started, but the Doctor cut him off.

"The TARDIS is not a machine. She is a time machine, and my owner."

"May I touch her?" Leo asked meekly.

"That's up to her." Was the Doctor's noncommittal reply.

"Well, it will be a small while until the others arrive." Selene stated, shrugging. "While Harry Potter and The Doctor were easy to pull off track, since they have some means of magical or at least unnatural travel, but our last party will be quite different."

"Why are we here, anyway?" Swaggered Draco Malfoy. "Can't we just, like, leave? There's nothing keeping us here, is there?"

"On the contrary, the Mist is very, very loose in here." Selene sighed. "Very few things are what they seem." She glared pointedly at Leo, who had just fallen down.

Leo looked around, stunned. "But... Where'd the chair go?"

"Exactly." Selene sighed.

"Let us go." Reyna threatened. "Why are we here, anyway?"

"Because I want you do be." The desk girl smirked. "Percy Jackson's group, you are on the first floor. Harry Potter's group, second. The Doctor, Rose, you have the third floor all to yourselves. The others will be on the fourth... Ah, here we go." She peered out as a yellow taxi dropped out of the sky and two well-dressed gentlemen and a lady got out and entered the hotel cautiously, the men holding guns and the lady holding a duster.

The four parties stared at each other. "Where's the case?" The shorter male asked.

"Oh, my, gods." Annabeth whimpered - actually whimpered. Hermione seemed to have newfound sympathy for Annabeth and squeezed her arm.

"It's Sherlock Holmes." Hermione whispered, her eyes wider than galleons.

"Then that's John Watson then, right?" Percy took a deep breath.

"That's why I couldn't drag The Hobbit peoples in here." Selene admitted. "It would be a bit of a catastrophe."

"Selene." Sherlock studied here. "You are certainly an interesting being. Had too much coffee this morning, I see, but only two donuts so your energy is less than it could have been. Love books, hate most movies, and..." He snapped his trenchcoat. "Here I am. So, Selene, you have your wish. Where is Moriarty?"

Hazel's jaw dropped, and Piper's eyes shifted rapidly between the teenage girl and Sherlock. Reyna seemed quite unnerved, but tried to cover it up with an indifferent expression.

"It's really you." Selene said, her eyes filled with happiness, longing, and satisfaction. "Everyone's here... Oh, my goodness, everyone's really here."

"And we need to really leave." Leo pointed out. "So, what? The Mist is keeping us here?"

"Spoken in a way that you would understand it, yes." Selene eyed Leo. "But with the truth..."

"You are keeping us here." Sherlock finished. "Why?"

"To prove my suspicions correct." Selene said. "Sherlock, John, you will be staying on the fourth floor. The objective? Catch Moriarty before he kills you all." She uttered a short, crazy laugh. John clicked a bullet into places, but with a wave of her hand, the gun dropped to the floor. He stared at it, shocked.

"How exactly do you plan to keep us here?" Frank asked. "What godly - or I suppose goddessly powers do you have?"

She gave him a little smirk. "Please, Fai Zhang." She pointed to the hallway leading to the right, the one with Percy Jackson's group's rooms. "Fangirls have the power."

A song started playing on the speakers.

We're fangirls so we have the power
SAY IT!
WHAT?
SAY IT!!!!

"Yep." Selene said, snapping her fingers in a Z formation.  "That's right."

-----–—–——–—–—–—–—–—–

How did you enjoy the first chapter, y'all? Updates will be sort of slow... By that I mean don't expect them every other day.

Did you recognize the song? I just changed one word. If you get it, comment below and you'll get a mention in the next chapter!

The first person to comment and vote will always get a mention. ^

DISCLAIMER: NONE OF THESE STORIES ARE MINE! I JUST OWN THE PLOT!