Time Explorers

Sunset Shimmer arose from her polished throne seeing her three princesses bowing before her. Twilight wondered if she was evil in this present world, although she did see the glass earlier honoring her royal bravery. But why was Princess Celestia and Luna the bad ones? Where they apart of eternal night?

She snapped out of her thoughts when Sunset Shimmer began to speak to the three once again, this time a little softer. "We have been expecting you," she announced. "As it did say in my book: Prophecies and Predictions, you three will be my princesses arriving from the past."

"That's the book I had when I first came to Ponyville.... Twilight thought, remembering her book of when she learned about Nightmare Moon. Sunset began to tell them what was going on.

"I've seen you've possibly encountered a memory wipe spell," she spoke firmly. "So my faithful student will helpfully explain the history of this world's destiny." Derpy stood up in a proud position, reading from Sunset Shimmer's scroll, which she recited with complete ease.

"Ahem," coughed Derpy, ready to tell everything.

Princess Celestia, along with Princess Luna, was out on revenge for respect against Queen Sunset Shimmer at the Sun Summer Celebration. I, Derpy Hooves, from Canterlot City, luckily moved to Ponyville aware of what was going on. After meeting my friends, we were on a journey to stop Princess Celestia and Luna. After we defeated them with the Elements of Harmony, Queen Sunset Shimmer announced for me to return to Canterlot with my friends, spending the rest of our lives defending Equestria from the evil princesses and King Sombra.

Twilight was very surprised. Not only did Derpy, yes, Derpy Hooves, take her position, but also have a different purpose in life. This was completely different from what she would have imagined, so she must have messed something up in the past.

"Are you ready to explain your side of the story?" Asked Sunset Shimmer.

"Yes, of course," Princess Twilight replied. "But this might sound crazy."

"Go ahead," Sunset replied, as she didn't mind.

"Me and my pet dragon, Spike, used a time travel spell just for fun. We accidentally ran into our past selves, and we came back to this messed up present. We're trying to get back to the past to write down some data, and figure out to get time back to normal."

"Easy enough to understand," added Sunset Shimmer, who seemed interested in her speech. "I can help you get home, but it'll take a little while. Come on, follow m-"

She was suddenly interrupted when King Sombra emerged from a huge blast of dark magic surrounding the room. He was laughing evilly as usual, with his six minions getting ready to attack. Sombra signaled an attack straight toward the two Twilights and Starlight, reading their magic against the shadows.

Unicorn Twilight spoke up, never showing fear. "Come on, girls! Get-"

"We will handle this," Derpy interrupted, readying the Element of Harmony. "Follow Queen Sunset Shimmer while we hold them off ourselves."

The three ponies obeyed, following Sunset Shimmer to a secret room underground from the castle. She quickly used the time spell to return them home. She spoke her final words before they all returned.

"Go. Save our world from terrible war on Sombra, Trixie and the princesses." Sombra was running toward them, right before they had gotten swallowed by the dome above once again, returning back to the past.

...

As soon as they got back, the Spikes were piled over data paper and new information. Unicorn Twilight picked them up and studied the results.

"Hmmm...." She began to read the paper. "We arrived in a world which had no Nightmare Moon at all, just the princesses at war with Sunset Shimmer. Now that was confusing."

"I'm just glad it's all over with," added Starlight. "I don't even know any of those ponies judging by I come from a different part of Equestria."

"We'll just sleep it off," Princess Twilight announced. "Time traveling is very hard work when you get used to it. Let's all go to bed."

They trotted upstairs with both Spikes, and slept through the night, ready for the next timeline they might travel to, no matter how weird.