After a few more moments of walking they finally reach the library. Twilight opened the door and held it open for the rest of the group. As soon as Zak walked in he was treated by a loud "SURPRISE!" and was shocked to see a lot of ponies smiling and partying. Pinkie appeared in front of him smiling widely. "Did we surprise you? Huh? Huh? Huh?"

"I'm...very surprised." Zak said. Pinkie bounced in place, "I knew you would be, everypony always is! I always throw a party for my friends!" Zak turned towards Twilight, who smiled. "You didn't think she was serious did you?" she asked. Pinkie laughed, "It's ok! Nopony ever does at first! Twilight learned that too!" Zak turned to Twilight, who blushed. "But enough of that!" she said, "Let's PARTY!"

Zak spent hours meeting a variety of ponies, all of whom seemed to stop caring he wasn't a pony. He met the Apple family, the Cake family, who had made the pastries being served at the party, two twins named Aloe and Lotus, a trio of fillies who called themselves the Cutie Mark Crusaders, and many other individual ponies. Zak spent another good chunk of the time answering various questions about himself and humans in general, a lot of which Twilight wrote down for future references. Of course, Zak felt the need to glance over some information, like being omnivorous. However, the party went without a hitch.

After the party, Zak and the Mane 6 cleaned up what little their was to clean up. Then, after everything was clean, everypony, besides Twilight of course, went home. Twilight pulled out an extra pillow and blanket and handed them to Zak. "Look, I don't want to-" Zak started, but Twilight cut him off. "I don't want to hear that," she said, "you need somewhere to stay, and the library is big enough."

"Well...thanks." Zak said. Twilight smiled and walked up the stairs. "Night!" she called down. "Yeah night!" Zak replied, lying on the couch. To be honest with himself, he was completely over the fact that he was in a world of ponies, but how? How did he get here? Why was he here? He put his hands on his face and thought...and thought...and thought...

The sun hit Zak in the face and he woke up groggy. He couldn't remember when he fell asleep, just that he did. Zak sat up slowly and rubbed his eyes. The smell of cooking helped him wake up and he went to the kitchen to see Twilight over a frying pan. "I didn't know you cooked." he said, causing her to turn and smile. "Well I wouldn't get very far in life if I couldn't cook." she said, placing two plates of eggs and toast on the table. Wait...eggs? Aren't eggs non vegetarian? So why do ponies eat eggs?

Zak decided that thinking about it would kill his brain cells, so he just went with it. He sat down in front of a plate and smiled, "I'm going to owe you a lunch." he said. Twilight smiled as she sat down, "I'll hold you to that." she said. As they ate, Twilight using magic to use a fork and knife, they talked about the party last night. "Pinkie knows how to throw a party." you said. "Well that is her special talent in life." Twilight said.

"Still, no one seems to pull people together like Pinkie." Zak said. Twilight pulled out a book and began writing more notes. "More information about me?" Zak asked. "Actually, Orion was shining very brightly last night and I just wanted to jot down some more notes." Zak stopped, "Did you say Orion?"

"Yeah," Twilight said, "It's a-"

"Constellation in the night sky." Zak finished. Twilight paused, "You know about Orion?"

"Orion is a constellation on Earth too." Zak said. "But Orion is a constellation that's only supposed to exist-"

"In the Milky Way, which can't be in two places at once." Zak finished. Twilight paused, "What does that mean?" Zak thought for a few moments, then smiled, "Multiverse."

Multi-what-now?" Rainbow Dash asked. Twilight had gathered everypony to hear Zak's explanation. When Zak asked her why Twilight just shrugged. "Multiverse," Zak said, "it's a theory on Earth." Twilight rolled out a big chalkboard and Zak drew two big circles and wrote Earth in one, and Equestria in the other. "Originally, I thought maybe Earth and Equestria were two separate planets." Zak started, "But I noticed too many similarities, like the constellations are the exact same, and in the exact same location."

Saying this, he erased the two circles and drew two lines vertically. "The Multiverse Theory," Zak continued, "is the theory that there are several universes all the same and yet with slight differences. Anything that can, could, or does exist all exist in their own universe."

"So I could already be a Wonderbolt?" Rainbow interrupted. Zak paused and looked at her, then shrugged. "That's one example." he continued, "The problem is, you can't just walk, or fly, into one of these universes. They're separated by a veil of...energy, pure energy. You would need more energy than...the sun to transport something from one universe to another. That can risk breaking the veil which would be...hectic."

"How so?" Twilight asked. "You remember my reaction to seeing you?" Twilight nodded. "That was a mild reaction, imagine thousands, no, millions of humans appearing out of nowhere. I'm one of the nice ones, there are others who are mean just for fun." He let that sink in a moment. "However, if that was the case, that would already be happening now. So," he drew a small circle in between the two vertical lines, "something would have had to focus a lot of energy on one small point to pick me up and not cause an entire collapse. Not only that, but according to Twilight, this has happened centuries ago, so something has been doing this multiple times."

Zak looked at everypony, "Now the question is: What has enough power to rip a hole in reality and seal it shut again?"

"Princess Celestia." Twilight said immediately. Zak paused, "Does Princess Celestia have a reason to pull humans out of Earth and put them in Equestria?"

"No..." Twilight said. "Luna?" Zak paused, "Motivation?" Twilight frowned, "Nothing..."

A 'who' and a flutter of wings directed everyone's attention to a tired looking owl flying to Twilight. Twilight took a folded parchment from Owlowiscious' leg and read.

"'To my faithful student Twilight: A human appearance in Equestria is a rare experience. However, they can also be problematic. Make sure Zak is treated well and is comfortable. I cannot cut this travel short, so don't get into any trouble. Your friend, Princess Celestia. P.S. Spike is a little upset at your choice in courier for some reason."

Twilight chuckled at the last bit and refolded the parchment. "I feel like I'm an endangered species." Zak said.

"OH!" a startled gasp snapped everyone to alertness. Rarity's eyes were as wide as dinner plates, "I forgot I have your new wardrobe ready!" Everyone stared at Rarity, then laughed. "Geez Rarity," Zak said in between laughs, "You sure know how to over-dramatize."

"What in the world do you mean?" she said in genuine confusion, "Wardrobe is a very serious matter!" That just made everyone laugh more. "Alright," Twilight said, "you go get your new wardrobe and I'll do some research on your theory." Zak was about to protest, but Rarity cut him off with a, "Come now!" So Zak and Rarity walked to the Boutique while everypony else left Twilight to study.

"Now you simply must tell me if any of your clothes aren't to your liking." Rarity said. Zak stared at his assortment of clothes. He actually did like them. All of the shirts seemed to have their own design and, when he looked closer, he found a suit! It was a black suit like something a lawyer would wear.

"Rarity, what's up with the suit?" Zak asked. Rarity's eyes sparkled, "One can never be unprepared darling, who knows when you may need to go to an event, or if you take a special somepony out somewhere." Zak scratched the back of his head, "I don't think I'll be meeting...er...somepony special here." Rarity laughed, "Oh don't be like that! I'm sure somepony will catch your eye eventually." Zak hadn't meant it like that, more like he didn't really think of ponies romantically.

"Oh, but listen to me prattle on." Rarity said, putting Zak's clothes in a bag, "You go on back to Twilight's and if you find anything wrong with your clothes you come back immediately." Zak took the bag, "Thank you very much Rarity." Zak said, then he left. As he left he thought about actually...LIKING liking a pony. Well c'mon it's bestiality dude. But they weren't exactly...animals. Yes, they were ponies, but they're more like other humans. It's not like he's at a barn on Earth, he's in a world where people are ponies. Look stop thinking like that, he thought to himself, you and Twilight can figure this whole thing out and you'll be back home in no time.