There had been a time when barriers between worlds were considerably stronger, when only a select few realms had connectivity to one another. But over the years, decades, or in some cases centuries, other planes developed their own methods of breaking them. Alabaster's tower wasn't the first beacon between dimensions, but it had for many years stood as the primary one, able to draw the attention from one world to another, distracting dragons or starships alike. The Genrehoppers began to spread, Carramba became known as a Nexus of worlds. Not merely the city it resided within, Crescent City, but the school itself, thanks to the many technological and magical influences it held.

With dragons in the mix, the ease of traveling between those dimensions led to new discoveries. Connections between Carramba and newly alligned worlds abounded! The availablity of instructors that could move themselves from world to world unaided, magics that provided safely warded arrival zones, and a whole host of draconic visitors, all this has created a ripple effect. Graduating students returned to their homeworlds, but then set out to new locations, broadening the event horizon of the Nexus.

All that is fairly recent history, all that is what most students arriving to Carramba learn in their orientation class shortly before the school year actually starts. Sometimes, that information is questioned; how is this world so popular and visible, instead of some other? Why does divine magic work here but not on some other world, even though they're both high-tech in addition? Something makes Twoarth 'special'.

And a lot of other worlds want to know more. Maybe something on Twoarth, or just specifically this smallish city on the west coast of the Skin-side of it, is extra-special. And maybe that something can be brought back to these other worlds.

It was one such world, Aperturth Prime, which sent numerous students in the hopes of discovering more secrets. Suited to this knowledge, Aperturths of all bents usually had odd science or technology that emulated 'superheroics' or 'magic'. Variations on that dimension intersected with each other enough that they knew one of them was 'better' at it than the rest. Hence why it was labeled 'prime'. From this main dimension were sent a few clones - not a rare thing given how much experimentation among all the Aperture worlds involved finding a good subject and working with them...

These kids were cloned from a young woman whose test scores seemed... merely average. She seemed nothing special, no great intellect or tremendous strength, no gifted fingers or regenerative properties. But in her was also a tremendous reserve of power, varied abilities seemed to spring haphazardly out of her DNA. Often enough, the clones that were built from her genes had such disparate powers that they hardly seemed like the same person. On paper, it meant that many niches could be filled with one donor source. In practice however...

All those different and varied clones needed to be tracked and categorized, learned from. What did one gene do when paired with another? How did the clones behave or function in proximity when one of them had power that could influence them? They'd heard about several professors at the campus that had access to much more involved genetic engineering devices - from Zekira, from the Rookery, from Vella Crean and even the Healing Den. Though often enough an Aperture scientist might be hesitant to ask for aid from such other places, it was time for that to change. They needed answers.

So off to Carramba they went, with implants that allowed Aperturth Prime's scientific team to track their progress and make tweaks to any new generations of clones.

In a surprising twist, however, all four of these clones were Searched by the local Carramba dragons - so their fate here may be quite different than even the scientists back home thought!