Knock Knock Knock!
"Twilight?" Fluttershy's voice came from beyond the front door to the library. "Twilight, it's me, Fluttershy. Uhm... I hope I'm not bothering you. But it's been three days since we last saw you and I was wondering if you and Spike were feeling okay..."
"Fluttershy, you can come in!" Spike's voice called.
"Really? Are... are you sure?"
"Please, Fluttershy," Spike repeated, his tone curt, emphatic. "Come in. Right now."
With a quiet creak, Fluttershy pushed the door open. She peered in, squinting at several flickering sparks of light. Bowing her body low to the ground, she nervously shuffled inside, her eyes locked on the center of the lobby the whole time. The deeper she traversed the library, the wider her eyes got and the lower her muzzle hung. At last, she arrived at Spike's side—where the dragon sat on the bottom step of the library's central stairwell, several empty bags of chips lying at his side as he too stared straight ahead.
"Uhm..." Fluttershy winced, leaning in to whisper in his ear. "Spike...? What's... what's going—?"
"You have to speak louder!" he exclaimed, for loud hisses of steam and crackles of artificial thunder were emanating from the opposite end of the room, timed with bright flashes of brilliant blue light. "She's been at it for three days straight! I'm almost afraid to break her concentration!"
"What... wh-what exactly is she working on?!" Fluttershy stammered.
"I dunno!" Spike's eyes remained glued ahead of him as he snuck another chip into his maw. Munching, he said, "It all started... mrmmff... the morning after you girls went out to see that movie!"
"Really?" Fluttershy blinked. "You know, I thought I would have nightmares from what I overheard in the theatre, but—surprisingly—all it gave me was a little indigestion!" She winced. "Ohhhh, I do hope Twilight isn't sick or something!"
"Nah, she's not sick. Just super ultra mega inspired!"
FLASSSH!
Fluttershy and Spike winced from a gigantic flash of light.
"Eureka!" Twilight's voice hollered from deep within the maelstrom of noise.
As the bright aura of light cleared, the other two could see Twilight standing in the middle of an elaborate laboratory setup. There were tables cluttered with petri dishes and bubbling beakers while sparkling tesla coils loomed in the background with wires hooked up to an elaborate battery-operated metal contraption. Framing the screen were three dusty chalkboards drowning in a yellow sea of scribbled notepads.
Twirling with a flounce of her disheveled mane above plastic laboratory goggles, Twilight grinned at the dragon and pegasus, lifting a cylindrical glass vial in her telekinetic grasp. The thing was corked off with a glowing blue crystal that shimmered in the electric light.
"At last!" She slid her safety goggles up, beaming. "I've made it!"
"Oh, that's so wonderful to hear, Twilight!" Fluttershy said with a smile. Then, three blinks later, she fidgeted. "Uhm... j-just what have you made?"
"I can't say for sure until I know that it works!" Twilight said. She carefully placed the smooth bottle onto a pedestal and took a calm breath, stroking her bangs back and composing herself. "First thing's first." She turned to face Spike and Fluttershy. "Go bring the girls here."
"Uhm... which girls, Twilight?" Spike asked.
Twilight's eyes narrowed with a violet glint. "All of them."