DISCLAIMER: I don't own the concept of the Mirror of Erised. It belongs to J.K. Rowling. I also don't own the Gossip Girl and its characters. :D I just own the plot.

A/N: I watched Harry Potter and the Sorcerer's Stone the other day when I suddenly thought of writing this story. The scene where Harry sees his parents in the mirror made me think of what the Upper East Siders would see if they actually stumbled upon such a mirror. What would be their deepest, darkest desires?

Please hit the review button below, thanks! :D

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CHAPTER 1: I Don't Think We're In New York Anymore

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"Nathaniel, tell me again what we're doing here?" Chuck asked looking cockily at the busy crowd scurrying past him. "We could have just taken the limo. I hate public transportation and so do Mac and Wilson," he complained.

"Mac and Wilson?" Nate asked. He looked at Chuck briefly and looked at his left and right puzzled.

"They're not used to walking with this much people. They prefer the limo's carpet," Chuck answered, referring to his custom-made shoes.

Nate just rolled his eyes, ignored his best friend and walked rather happily around the hustle and bustle of Grand Central Terminal. Chuck, with an annoyed but curious expression, followed him as he weaved through the crowd.

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"S, I still can't believe you dragged me here," Blair complained. She held a cup of coffee on one hand and a Burberry handbag on the other.

"Come on, B. It's not so bad. Hey, I can still remember the day I went back from boarding school… Okay, never mind. I really don't want to remember that," Serena said linking her arm to her best friend's.

The station was jam-packed with people. As they were walking, a tall middle-aged woman accidentally bumped into them spilling Blair's half-filled cup of coffee.

"Hey! Watch it!" Blair said hotly, as the coffee spilled on her. "You just ruined my Chanel coat, lady," Blair shouted, trying to separate the coat from her dress.

The woman muttered a 'sorry' but continued walking briskly. Serena fished out napkins from her bag and headed towards the bathroom, Blair in tow.

"Eww, no way, S," Blair said, wrinkling her nose as they reached the bathroom. "I am not a fan of public toilets," she said, disgusted.

"B, you don't seriously want your coat covered in coffee stains. Besides, the coffee scent doesn't suit you… and neither is that mark on such a lovely coat," Serena finished pointing on the dark blotch in her white Chanel coat.

"Ugh! The things I could do for fashion," Blair said allowing herself to get dragged by Serena. "Ewww… I cannot believe I'm allowing myself to get dragged into a public bathroom. S, it's going to be so crow… empty?" Blair said, as they stood in the empty bathroom.

Blair looked around completely bewildered. A female public bathroom is never empty; that's just how it is. Serena looked at her friend with a triumphant smile, put some napkins under running water, and went to work. After a few minutes, Blair was coffee-scent-free.

"S, remind me again why I agreed to coming here?" Blair asked as they were about to leave the bathroom.

"Because you love me?" Serena answered comically, raising her eyebrows. "B, we're gonna do something crazy and fun and completely different."

Serena pushed the door of the bathroom and was greeted by an eerie silence. The only sounds were the creaking of the door and the clicking of their heels. The two friends stared at each other when Blair's eyes suddenly widened in excitement.

"S!" she said gasping excitedly. "You had this whole place closed?! Is there a party or something? This is the 'crazy and fun and completely different' thing you were saying. Wow, you've outdone all your other parties. You've even outdone MY parties," she finished.

"Uhm, actually…" Serena started, dazed and confused.

"And, oh my gosh, it's Nate and Chuck!" Blair said excitedly before she could catch herself. Wasn't she supposed to be mad at Chuck for blowing her off?

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"This is weird. Somebody pinch me," Blair said.

Chuck seized the opportunity to touch her and obliged, pinching her hardly on the forearm.

"Owww!!" Blair screamed, eyes widened, and slapped Chuck's hand as hard as her French-tipped hand possibly could. She glared at Chuck only to have him smile at her.

"Just following orders, princess," Chuck said, looking her in the eye then looking at his throbbing hand, which he opened and closed. His face formed a grimace as red dots appeared on the battered hand.

Blair saw this and feigned concern, "Aww... Did I hurt you? I thought you wanted it rough," she said, doe-eyed and all.

"If you wanted it rough, you should have told me. I could have pinched you a little harder," he finished rubbing his hand gingerly.

"Oh, you deserve it," Blair shot through gritted teeth.

Nate and Serena were speechless at the scene that unfolded before them. Before Serena could roll her eyes at her stepbrother, she turned away from them. The argument faded into the background as she tried to fathom the deserted station. Blair was right. The whole thing was extremely weird.

They were the only people in Grand Central Station.

"What is going on here?" Nate whispered to Serena.

"With my best friend and brother dearest," Serena said sarcastically and made a 180-degree turn looking at the empty station, "or this extremely deserted station in broad daylight?" she finished, more seriously.

Before Nate got the chance to answer, Serena spotted three figures in the distance.

"Oh! I see people there," Serena said excitedly, pointing in the direction where the trains are boarded.

"Come on, Nate!" Serena said, pulling Nate with her. "They might know what's going on." She hurried toward the three figures only to stop dead in her tracks.

"…Or not," she muttered under her breath as she recognized them. She immediately released her hold on Nate and stared uneasily at the approaching outlines of Jenny, Vanessa, and Dan.

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"Nate, Serena!" Jenny called out recognizing them.

Dan and Vanessa lagged just a bit behind as Jenny hurriedly approached Nate and Serena.

"What's going on? We just got off the train and it was really creepy," Jenny started as Dan and Vanessa caught up.

"Hey," the four greeted each other in chorus and extremely awkwardly.

Feeling the need to break the escalating tension, Jenny continued, "We were the last to get off the train and when we did, we were the only ones. The train was full!" Jenny couldn't contain her trepidation.

"Blair and I just went to the bathroom for like, five minutes. When we got back, every one was gone," Serena said.

"Blair's here?" Jenny asked.

"And Chuck, apparently," Dan said distastefully as the two approach the group.

Just as they formed a circle, sporting different and very expressive faces, all their phones rang.

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Have an answer for Chuck now, N?

Join the party of five, B. This will outdo your parties altogether.

Too much to handle, little J?

Welcome to the ride, V! Fasten your seatbelt and get ready for a long and bumpy one.

Enjoying, Chuck? Public transportation isn't so bad now, is it?

Crazy and fun and completely different, right S?

Try to keep up, Brooklyn.

You know you love me,

Gossip Girl

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A/N: Please read and review. I greatly appreciate reviews. I still can't think of Nate's deepest and darkest desires, lol. Suggestions for any of the characters would be welcome… because my personal bias might act up. :D Thanks!