It is inexcusible how long it's been since my last update. I could try to come up with excuses and win you guys over with words, but honestly that feels a little cheaty. Either way, I'm gonna update now and as often as I can. My Tumblr is always available if you want to message me! Complaints, suggestions, general fandom-goodness... I'm more likely to post there than here on a personal level, but at least here you get stories. If extremely inconsistantly!

Okay, it's been way too long. Where was I? Oh right...

Panic in Ponyville

It took Fluttershy a moment to notice Delta had fainted.
"Delta! Oh, goodness..." The yellow pegasus exclaimed quietly. Around them, Ponyville was in chaos. Not the good kind of chaos, either. Ponies galloped around, terrified. Fluttershy was sure she'd seen a metalic pony march after a group of stallions at one point.
"Sugarcube, are you okay?" Applejack fanned the unmoving pony with her hat, to no avail. They were all still a little shocked by the disappearance of Sugarcube Corner, and AJ's use of her affectionate term made Rainbow Dash flinch. Luckily, nopony noticed, so Dash could pretend it was because of a nearby crash. The air was filled with the high-pitched wailing of ponies and the screech of something the ponies couldn't identify as a car alarm.

"We need to get everypony to safety." Twilight announced. "Applejack, can you bring Delta to the Castle? The guards will look after her there. After that, come find the others. Fluttershy and Rainbow Dash, you two fly around Ponyville and see if you can find somewhere safe to bring everypony. Report back to Rarity and Zecora."
"Got it." Dash responded, sharing a nod with Fluttershy. The two took off into the air. Applejack hoisted the unconscious Delta onto her back and raced away toward the Tree Castle.
"Rarity and Zecora, could you round up as many ponies as possible and try to keep them out of harm's way? It won't be easy - everypony's terrified. Once Rainbow and Fluttershy come back with a safe location, bring everypony you can there." Twilight ordered. The unicorn and the zebra nodded and took off.

"What about you and I?" Time Turner asked. Twilight just sighed.
"I need you to find Mech and get out of Ponyville." The Princess' voice was quieter.
"What? That's crazy! I need to help everypony else." The stallion had a disbelieving smile on his face. Twilight dropped her eyes for a moment, remaining silent. Then, she looked up. Time Turner almost took a step back from the sheer intensity of sadness there.
"Equestria is doomed." Her voice was small. "Our only hope was to use the Rainbow Power to seal the barriers between the worlds. Now, there's nothing stopping the multiverse from tearing the world apart. It's only a matter of time before everything is gone. But if my theory is correct, that means Ponyville is the epicentre. The worst of the damage is here, and this'll be the first place to go."

Time Turner was silent for a moment, watching the Princess. He wasn't bothering to hide his caring gaze.
"Twilight, I am not leaving you. Not to gain maybe one more day of life. Besides, there's always hope." It was Twilight's turn to almost take a step back. Turner's eyes were shining alongside his sad smile.
"Thank you." She blinked sadly.
"So, what are you doing then?" The stallion asked, his voice strong and prepared again.
"Well, I need to address the citizens of Ponyville to let them know all will be okay." Twilight stood a little straighter. "They need a pony to look up to in this situation. But..." She trailed off.
"But... you think it should be Celestia or Luna." Turner finished. "You want to go to Canterlot."
"It would only take a moment. I've been working on a long-range teleportation spell that would bring me straight there. Then I can talk to the other Princesses and get some advice on how to calm everypony down." Twilight explained.

Out on the road, beside the crater that was Sugarcube Corner, a huge metallic thing appeared without a sound. It faded into place, shimmering ever so slightly. The ponies would never be able to identify the human object as an airplane. However, Time Turner frowned at the metal thing, watching as it phased into existance. Its shimmering reduced dramatically until only the edges were shimmering.
Then, Turner stared around Ponyville at all the things that were out of place or missing. He squinted at the crater of Sugarcube Corner.
Suddenly, the stallion jumped up in realisation.
"Aha! Oh, yes, this is good! This is very, very good!" Time Turner exclaimed.
"What? What is it?" Twilight asked.
"Look very carefully at everything. Every little thing in Ponyville that shouldn't be here, or should be here." Turner explained. Twilight did as she was told.
"I still don't..." She began.

"Look carefully, Twilight. The edges are shimmering!"
"Uh, I fail to see how that's so great."
"Equestria is filled with powerful magic. Correct? That's how pegasi can fly, how us earth ponies are strong, and how unicorns can use their magic. It's also how our world is so harmonious and strong. Without the magic, so many things would fall apart, like the Everfree Forest, or the weather. Likewise, our universe is protected by this magic. By... by a bubble of this magic. I studied it a few years ago, before we met. It's more a theory, but a lot of ponies agree with it.
Anyway, what I'm thinking is that even now, the magical bubble is fighting back against the destruction. It's like the barriers have been broken, but the bubble is intact, trying its very best to keep everything in order. That's why the edges are shimmering! It's the magic fighting back!" Turner explained, his words tumbling out like a stream. His eyes were wide as he spoke, conveying his hope.

Twilight took a moment to repeat his words in her head. Then, her eyes widened too.
"That's it!" She exclaimed. "If we can just reinforce the magic, it could reset everything! Like pumping up a beach-ball! Oh, that's brilliant, Time Turner!" The Princess pulled the stallion into a quick hug. "I need to tell Celestia at once! I'll be right back."
Time Turner's ears were red as Twilight teleported away in an unusually bright flash. He supposed it took more power to teleport all the way to Canterlot, even as an alicorn.

Twilight Sparkle was a little dazed after her long-range teleport, so it took her a moment to identify her surroundings. After the pounding in her head subsided, she realised she was in an empty corridor in Canterlot Castle. More than a little proud of her accomplishment, but still wary of the danger Equestria was in, Twilight began galloping up the corridor toward a huge set of doors she recognised as that of the throne room.
It was eerily quiet in the corridor, with only Twilight's echoing hoofclops and her racing heartbeat to keep her company. With a blast of magic, Twilight opened the door and skidded to a halt as quickly as she could, a horrified expression on her face. The throne room was as she remembered it, with the two thrones at the back of the room. Luna had her own throne installed recently, though that put the whole room off-centre. Twilight was always thoroughly annoyed by it.
Yes, it was as she remembered it. Except... there was a huge, gaping chasm between where Twilight stood and where the thrones were.

The purple Princess gasped. It was as though someone had literally ripped the room in two. Like it was merely fabric. The chasm shimmered, but beyond the shimmer of magic, Twilight could only see darkness. She guessed this was what Delta had described as the 'Void'.
Twilight couldn't take her eyes off the chasm for the longest time. That was, until a voice pulled her from her shocked paralysis.
"Princess Twilight Sparkle." The voice mocked. The mere idea that the voice was using her name to mock her was enough to startle Twilight back to life.
"Huh?" Twilight glanced up. Then, her eyes widened. "Princess Celestia! Princess Luna!"
The two mares that sat on their respective thrones smirked.
"Look, sister. It's the Princess of Friendship!" The pony that looked like Luna sneered. The voice was all wrong, though. It wasn't the voice of kind, gentle Luna, but the cruel drone of Nightmare Moon.
"So it is, sister. I wonder if she knows." Celestia's voice was wrong, too. It was much too cruel and dry.

"I don't think she does, sister." The Luna look-alike blinked, revealing the trails of purple and black seeping from her eyes. Twilight gasped and took a step back. The Celestia look-alike cackled meanly, leaving Twilight frozen in fear. She, too, allowed her eyes to leak.
"Well, now she does!" Celestia snorted, biting back another laugh.
"Wh-who are you?" Twilight's voice shook in fear. It took her a moment, but she quickly realised she had to be strong. As a Princess, it was her duty to protect Equestria. "I demand you tell me who you are!" Her voice was much stronger.
"Oooh, watch out sister!" Luna smirked, her pupils narrowing. "She demands we tell her who we are!"
"Oh, I think we should, sister." Celestia beamed, her eyes crazily wide. "I think she deserves to know before she dies. It's only fair!"

Uh oh... what is Twilight going to do? What can she do in that situation? You'll have to wait to find out!
...Hopefully not as long as last time. I'm sorry about that, again.

Just so ya know, I might post the backstory between Twilight and Time Turner on Tumblr at some point. Just for some idea on their relationship, since I know it's a little all over the place here.