Technology is Magic

After handling a thaumavorous (magic-eating) beast called a Thaumatore from attacking a magical ceremony hosted by their tech-magic department, the Lonies discover a clue left during it's attack that suggests the secrets they derived their specialties in are tied to a shapeshifting sentient orb of pure magic named Magnata is released from a prison since the Teadr 1 Ages, revealing that magic was discovered and given to the AUU as a gift that would enrich their lives as it did to the givers, the Teadr 1 Realsh, who are fairy-like alien beings who inhabited every world where magic was found with a few exceptions. But because Magnata's memory goes black after that, it's decided by Shade against her mother's orders that she and her friends find more when she fears that there could be more to the story that needs attention. Thus, they send the HA and Lodgers, as well as the Mane Six and other Equestrians, to go with them to the Realsh home planet of Realisia, as the Grand Council would have no choice even if they know Shade is disobeying her mother, because of their clauses regarding the protection of anything regarding Teadr 1 matters. Thus they go to Realisia and discover a setting similar to the world of Ego in Guardians of the Galaxy Vol. 2, and that the Realsh are still alive, but not physically as they became pure living magic and thus the world and it's seemingly barren society runs itself. The strongest of them, their leader Queenmage Maglica Mercedes Effervescenbury, or just The Queenmage, and her eccentric daughter Chryslera say that they paved the way to the basis of tech magic as the discoverers, givers, and guardians of magic to where they made magic, life, and technology exist in perfect harmony like in Ferngully. However they did not account that there would be those who wished to use it for evil, and thus dark magic was discovered. To balance this out, they became the guardians of magic itself and watch over worlds like Magelio, but later on an evil force of pure dark magic entities taking the form of Starsquids (space-faring bioluminescent squid and another part of an Astro Whale's diet) overwhelmed them and lead to their supposed extinction, saving themselves by becoming pure mana (adaptable molecules that are the source of magic in the AUU) and thus transformed into magic. This made them immortal and thus they continue to guard magic. However, Queenmage's scribe, Scribe Saucla, discovers through vague hints through both artifacts and faint magic signatures that something is absorbing the magic of their world. It's revealed that the thaumatore they defeated was actually an enemy of Equarians named Matterwhile, who was a Lony that was turned into a monster of pure magic by a magical demon and thus had the power to create powerful paradoxes to travel anywhere through astral magic as long as she could get a faint sample of mana, and after experiencing the pain and cruelty of the war her homeland endured to where she was accused of insubordination and treason, sought to remake Equaria in her image with her newfound powers, believing her rule was the best way to protect it. It's revealed she stowed away after stealing Realsh mana didn't work as her power was weakening since she needed to feed on magic to maintain her power and thus she wasn't strong enough to go there casually. Now that she's in a world that's like a banquet to her, she starting to fully restore her power so she can make her goal a reality, becoming strong enough to be a full match to our heroes as she absorbs the magic of the world and enslaving it, weakening the Realsh and making them vulnerable for the first time in eons. Thus, with help from Chryslera and some surviving Realsh, the heroes will have to go into the magic matrix through advanced technology and albeit complex coding of all magical and programmable elements in the AUU to restore the Realsh back to physical form and stop Matterwhile once and for all, but they must evade Matterwhile as she attempts to feed on their magic as well by following them into the matrix and chasing them down.