"Spike?!" yelled a mare in another room.
This sudden outburst woke up a young pale purple stallion that was sleeping with his head laying on top of an opened book.
"Twilight, will you keep it down!? I'm trying to sleep!" he yelled out to the mare in the other room, brushing his purple mane with rose streaks out of his face.
"Dusk, how many times have I told you? The library is not for sleeping!" she yelled back.
"Well, excu~se me! I'm not the one who filled their twin brother's room with so many books that he can't sleep there!" Dusk's horn lights up and levitated the book he was using as a pillow and put it in its proper place on a nearby bookshelf.
"Oh please. It's not that much." she said, facing Dusk, who just entered the same room as her.
He lowered his head, glared at her, then grinned. "You literally reconstructed my bed out of those books, including the mattress." He said, pointing an accusing hoof at her. "Do you realise how uncomfortable that is?"
She rolled her eyes and smiled back. "You used to make a small throne out of those books in your bed."
"Yes, but I still had a mattress and pillows." he spat back in a voice of mock anger, his head tilted to the side with wide eyes and a wide smile.
They both laughed for a moment. Spike walked up to them, looking at them, with eyes half-closed; expressing agitation, and a present-wrapped box impaled on his tail.
"Hey, Spike. What that?" said Twilight, pointing at the present on Spike's tail.
Spike's eyes widened and pulled the present off his tail.
"A present for Moondancer." he said, holding up the box as it fell apart and a teddy bear fell out onto the floor, a large gash in its side.
His expression turned flat as his eyes were, again, half-closed. "What do you want?"
Twilight jumped a little, realising what she came into the library for.
"Oh! I need you to help me find a book titled 'Predictions and Prophecies,' it's really important. You can help too Dusk."
They began their search, Twilight levitating books down from high shelves, and Dusk skimming through shelves at eye level, briefly reading the titles of each book's spine. Spike, however, immediately went for a ladder and went for a shelf on the other side of the room and the first book he picked up was the one he was looking for.
"I found it!" he said to Twilight across the room, who immediately levitated it out of his claws before he could fully comprehend that she had her own telekinetic grasp on it, pulling him down to the floor directly in front of her, face down on the floor, book in hand.
"Aha!" she said, letting every other book she had levitating around her drop onto the floor. Spike looked up and saw the mess Twilight made and gave a sharp exhale as he proceeded to pick up the grounded books.
Twilight flipped through the pages of the book, "Elements of Harmony, Elements of Harmony. Ah! 'Elements of Harmony. See: Mare in the Moon'?"
Dusk raised an eyebrow at Twilight. "Really? A fairy tale? You interrupted my nap for a fairy tale?"
Twilight slammed the book shut with a loud snap and glared at Dusk. "One: You shouldn't be sleeping in the library. Two: If I'm right, this could mean the fate of Equestria."
Dusk shrugged almost indifferently, "Well then, I suppose we should write to Princess Celestia about this."
"We?"
"Yes. 'We.' I'm going to help you research anything more that could be found out about these 'Elements of Harmony,' the Mare in the Moon and how they are related."
Twilight gave a smug smile and craned her neck closer to Dusk's ear. "You want to get on my teacher's good side. Don't you?" she said, moving her eyebrows up and down in a seductive manner.
Dusk suddenly blushed at this, "No! It's just that- you have a hard time accepting that you're wrong - and - I - just want to be there to support you when you are." he blurted.
Twilight didn't let off her smile. "Alright then. Let's get to work."
The twin ponies and dragon went about searching the library for any other records regarding the Elements of Harmony or Nightmare Moon. Once they had culminated enough information to be sufficient by both of the twins' standards, they sent their proposal to princess Celestia.
"What?!" Twilight and Dusk screamed in unison.
"'My faithful student Twilight Sparkle. I appreciate you and your brother's concern, and you know that I trust you completely, but you and your brother must simply stop reading so much into these fairy tales.'" Spike recited what the princess had written in response to their letter warning her of the impending danger of Nightmare Moon.
"'My dear Twilight and her brother Dusk, There is more to a young pony's life than studying. Which is why I'm sending you and your brother to supervise the preparations for the upcoming Summer Sun Celebration in this year's location: Ponyville. Not only will you see that the preparations for this event goes smoothly but hopefully you two will complete an even more important task: making some friends. Your concerned teacher and brother's crush, Princess Celestia.'" Spike cited a second letter from Celestia while all three of them were riding a flying chariot to their destination. "See Dusk? Even Celestia knows you have a crush on her."
"Shut up, Spike." Dusk said as he darkly looks out to the horizon to his left.
Twilight, however, hung her front hooves over the other edge of the chariot scowling, and when Spike finished reading the letter she let her head droop down as far as her neck would allow and relaxed her face to a sad expression.
Spike looked at the both of them and said, "Cheer up you two. Look on the bright side the princess has arranged for the two of you to stay in the library. How's that sound?"
Twilight perked up after a moment. "That sound good. You know why? Because I'm right. We'll check on the preparations as fast as possible then go to the library to gather proof of Nightmare Moon's return."
"What's the point?" Dusk said, not breaking his fixation with the horizon.
"Come on now, Dusk." Twilight said, putting a comforting hoof around his shoulders, bringing him in for a one-forehoof hug. "Just because we were shot down on our first try doesn't mean we should give up hope now."
Dusk turned to face his sister and gave her a warming smile. "I guess I'm the one who needs help in accepting being told that I'm wrong. You go into denial, whereas I seem to go straight to depression."
"Denial? Depression? You make it sound like going through the stages of grief."
They laughed and touched down in Ponyville.
"So," Spike began, "What about making friends?"
Twilight and Dusk got out of the chariot. "We're assigned to oversee preparations for the Summer Sun Celebration. And the fate of Equestria doesn't rely on either of us making friends here."