It's just another day for the mane six in Equestria. But like normal days, things will often go sideways when some creature from another world decides to say hello. But this time, this creature is familiar but impossible at the same time.
A human with quantum-like powers, Tartarus bent on obtaining the true powers that fuel the Elements of Harmony. Together the group of six ponies has gone through thick and thin, often showcasing powers of their own that seem to defy reality. But this time, they get separated by thousands and thousands of stars. Six becomes two and four. Fluttershy and Applejack find themselves on an alien planet with the impossible task of getting home. While Twilight, Rarity, Rainbow, and Pinkie pie find themselves defending themselves from a quantum threat that looms over the entire safety of the very thread that weaves through the universe.

And Twilight finds she is the keystone to it all.

(Cross over containing elements from Subnautica and No Man's Sky. No Series tag for them so I'll put them here?)
Cover Art by me

Life in Equestria was suddenly changed when Celestia returned to the throne, demanding it back. The world found itself with the Eternal Sun, scorching the land for years to come. Though with every tribulation life will adapt. Starlight Glimmer has adapted to her new environment, despite being Celestia's number one target. She finds herself on the run, at all times.

She never knows when one of the Elements of Harmony would be after her skin. Normally a visit from her friends would be much appreciated. Though not after Celestia twisted robotics into their biological shells. Now, they serve her, forced or willing. No pony knows.

Though not all of the Elements remain. Twilight Sparkle, Luna, and Cadence all disappeared without a trace when Celestia overtook Canterlot. Starlight remains of their old friend group and she still searches for them, and a method to free the rest of her friends. Her search is cut short when an old friend comes to her in a foreign vehicle.

Sunset shimmer appears before Starlight and she is keenly aware of the situation.